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TI-TL2575:4.75-40V 1A 3.3V 5V 12V


TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
www.ti.com
SLVS638B – MAY 2006 – REVISED JANUARY 2007

FEATURES
? Fixed 3.3-V, 5-V, 12-V, and 15-V

Options With ±5% Regulation (Max) Over Line, Load, and Temperature Conditions Adjustable Option With a Range of 1.23 V to 37 V (57 V for HV Version) and ±4% Regulation (Max) Over Line, Load, and Temperature Conditions Specified 1-A Output Current Wide Input Voltage Range…4.75 V to 40 V (60 V for HV Version) Require Only Four External Components (Fixed Versions) and Use Readily Available Standard Inductors 52-kHz (Typ) Fixed-Frequency Internal Oscillator TTL Shutdown Capability With 50-?A (Typ) Standby Current High Efficiency…as High as 88% (Typ) Thermal Shutdown and Current-Limit Protection With Cycle-by-Cycle Current Limiting
GND

KTT (TO-263) PACKAGE (TOP VIEW) 5 4 3 2 1

?

ON/OFF FEEDBACK GND OUTPUT VIN

? ? ?

GND

N (PDIP) PACKAGE (TOP VIEW)

? ? ? ?

NC NC OUTPUT NC GND NC FEEDBACK NC

1 2 3 4 5 6 7 8

16 15 14 13 12 11 10 9

VIN NC NC GND GND NC NC ON/OFF

NC ? No internal connection
KV (TO-220 STAGGERED LEADS) PACKAGE (TOP VIEW) (SIDE VIEW)

APPLICATIONS
? ? ? ? Simple High-Efficiency Step-Down (Buck) Regulators Pre-Regulators for Linear Regulators On-Card Switching Regulators Positive-to-Negative Converters (Buck-Boost)

5 4 3 2 1

ON/OFF FEEDBACK GND OUTPUT VIN

Pins 1, 3, 5

Pins 2, 4

DESCRIPTION/ORDERING INFORMATION
The TL2575 and TL2575HV greatly simplify the design of switching power supplies by conveniently providing all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. Accepting a wide input voltage range of up to 60 V (HV version) and available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustable-output version, the TL2575 and TL2575HV have an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a manual shutdown is available via an external ON/OFF pin. The TL2575 and TL2575HV represent superior alternatives to popular three-terminal linear regulators. Due to their high efficiency, the devices significantly reduce the size of the heatsink and, in many cases, no heatsink is required. Optimized for use with standard series of inductors available from several different manufacturers, the TL2575 and TL2575HV greatly simplify the design of switch-mode power supplies by requiring a minimal addition of only four to six external components for operation. The TL2575 and TL2575HV are characterized for operation over the virtual junction temperature range of –40°C to 125°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD, PowerFLEX are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Copyright ? 2006–2007, Texas Instruments Incorporated

TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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ORDERING INFORMATION (1) TL2575 (VIN(MAX) = 40 V)
TJ VO (NOM) PDIP – N 3.3 V TO-263 – KTT TO-220 – KV PDIP – N 5V TO-263 – KTT TO-220 – KV PDIP – N –40°C to 125°C 12 V TO-263 – KTT TO-220 – KV PDIP – N 15 V TO-263 – KTT TO-220 – KV PDIP – N ADJ TO-263 – KTT TO-220 – KV (1) (2) PACKAGE (2) Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 ORDERABLE PART NUMBER TL2575-33IN TL2575-33IKTTR TL2575-33IKV TL2575-05IN TL2575-05IKTTR TL2575-05IKV TL2575-12IN TL2575-12IKTTR TL2575-12IKV TL2575-15IN TL2575-15IKTTR TL2575-15IKV TL2575-ADJIN TL2575-ADJIKTTR TL2575-ADJIKV TOP-SIDE MARKING TL2575-33IN TL2575-33I TL2575-33I TL2575-05IN TL2575-05I TL2575-05I TL2575-12IN TL2575-12I TL2575-12I TL2575-15IN TL2575-15I TL2575-15I TL2575-ADJIN TL2575ADJI TL2575ADJI

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.

ORDERING INFORMATION (1) TL2575HV (VIN(MAX) = 60 V)
TJ VO (NOM) PDIP – N 3.3 V TO-263 – KTT TO-220 – KV PDIP – N 5V TO-263 – KTT TO-220 – KV PDIP – N –40°C to 125°C 12 V TO-263 – KTT TO-220 – KV PDIP – N 15 V TO-263 – KTT TO-220 – KV PDIP – N ADJ TO-263 – KTT TO-220 – KV (1) (2) PACKAGE (2) Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 Tube of 25 Reel of 500 Tube of 50 ORDERABLE PART NUMBER TL2575HV-33IN TL2575HV-33IKTTR TL2575HV-33IKV TL2575HV-05IN TL2575HV-05IKTTR TL2575HV-05IKV TL2575HV-12IN TL2575HV-12IKTTR TL2575HV-12IKV TL2575HV-15IN TL2575HV-15IKTTR TL2575HV-15IKV TL2575HV-ADJIN TL2575HV-ADJIKTTR TL2575HV-ADJIKV TOP-SIDE MARKING TL2575HV-33IN 2BHV-33I TL2575HV-33I TL2575HV-05IN 2BHV-05I TL2575HV-05I TL2575HV-12IN 2BHV-12I TL2575HV-12I TL2575HV-15IN 2BHV-15I TL2575HV-15I TL2575HV-ADJIN 2BHV-ADJI TL2575HVADJI

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

FUNCTIONAL BLOCK DIAGRAM
VIN 1 + CIN

Unregulated DC Input

Internal Regulator

On/Off

ON/OFF 5

FEEDBACK 4 R2 Fixed-Gain Error Amplifier + _ Comparator + _ Driver 1-A Switch OUTPUT 2 D1 L1 + COUT L O A D VOUT

R1 1 kW

1.23-V Band-Gap Reference

GND 52-kHz Oscillator Reset Thermal Shutdown Current Limit 3

3.3 V: R2 = 1.7 kW 5 V: R2 = 3.1 kW 12 V: R2 = 8.84 kW 15 V: R2 = 11.3 kW ADJ: R1 = Open, R2 = 0 ?

A.

Pin numbers are for the KTT (TO-263) package.

FEEDBACK 4 7-V to 40-V Unregulated DC Input +VIN 1 3 + CIN 100 ?F GND 5 TL2575-05 OUTPUT 2 ON/OFF D1 1N5819 + COUT 330 ?F C1 100 ?F + L1 330 ?H L2 20 ?H 5-V Regulated Output 1-A Load

Optional Output Ripple Filter

A.

Pin numbers are for the KTT (TO-263) package.

Figure 1. Typical Application Circuit (Fixed Version)

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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Absolute Maximum Ratings (1)
over operating free-air temperature range (unless otherwise noted)
MIN VIN Supply voltage ON/OFF input voltage range Output voltage to GND (steady state) TJ Tstg (1) Maximum junction temperature Storage temperature range –65 TL2575HV TL2575 –0.3 MAX 60 42 VIN –1 150 150 UNIT V V V °C °C

Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

Package Thermal Data (1)
PACKAGE PDIP (N) TO-263 (KTT) TO-220 (KV) (1) (2) BOARD High K, JESD 51-7 High K, JESD 51-5 High K, JESD 51-5 θJA 67°C/W 26.5°C/W 26.5°C/W θJC 57°C/W 31.8°C/W 31.8°C/W 0.38°C/W 0.38°C/W θJP (2)

Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability. For packages with exposed thermal pads, such as QFN, PowerPAD?, or PowerFLEX?, θJP is defined as the thermal resistance between the die junction and the bottom of the exposed pad.

Recommended Operating Conditions
MIN VIN TJ Supply voltage Operating virtual junction temperature TL2575HV TL2575 4.75 4.75 –40 MAX 60 40 125 UNIT V °C

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

TL2575 Electrical Characteristics
ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2)
PARAMETER TEST CONDITIONS VIN = 12 V, ILOAD = 0.2 A TL2575-33 4.75 V ≤ VIN ≤ 40 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 12 V, ILOAD = 0.2 A TL2575-05 VOUT Output voltage TL2575-12 8 V ≤ VIN ≤ 40 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 25 V, ILOAD = 0.2 A 15 V ≤ VIN ≤ 40 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 30 V, ILOAD = 0.2 A TL2575-15 18 V ≤ VIN ≤ 40 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 12 V, VOUT = 5 V, ILOAD = 0.2 A 8 V ≤ VIN ≤ 40 V, VOUT = 5 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 12 V, ILOAD = 1 A VIN = 12 V, ILOAD = 1 A VIN = 15 V, ILOAD = 1 A VIN = 18 V, ILOAD = 1 A VIN = 12 V, VOUT = 5 V, ILOAD = 1 A VOUT = 5 V (ADJ version only) 25°C Full range 25°C Full range IOUT = 1 A (2) 25°C Full range 25°C 25°C Full range VIN = 40 (4), Output = 0 V VIN = 40 (4), Output = –1 V 25°C 25°C OFF (ON/OFF = 5 V) 25°C 93 1.7 1.3 7.5 5 50 98 2.8 3.6 4 2 30 10 200 47 42 0.9 52 25°C TJ 25°C 25°C Full range 25°C 25°C Full range 25°C 25°C Full range 25°C 25°C Full range 25°C 25°C Full range TL2575 MIN 3.234 3.168 3.135 4.9 4.8 4.75 11.76 11.52 11.4 14.7 14.4 14.25 1.217 1.193 1.18 75 77 88 88 77 50 100 500 58 63 1.2 1.4 nA kHz V % A mA mA ?A % 15 15 15 1.23 1.23 12 12 5 5 TYP 3.3 3.3 MAX 3.366 3.432 3.465 5.1 5.2 5.25 12.24 12.48 12.6 15.3 15.6 15.75 1.243 1.267 1.28 V V UNIT

Feedback voltage

TL2575-ADJ

TL2575-33 TL2575-05 η Efficiency TL2575-12 TL2575-15 TL2575-ADJ IIB fo VSAT Feedback bias current Oscillator frequency (1) Saturation voltage Maximum duty cycle (3) ICL IL IQ ISTBY (1) (2) (3) (4) Switch peak current (1) (2) Output leakage current Quiescent current (4) Standby quiescent current

In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to ?18 kHz and the minimum duty cycle from 5% to ?2%. The resulting output voltage drops to ?40% of its nominal value, causing the average power dissipated by the IC to lower. Output is not connected to diode, inductor, or capacitor. Output is sourcing current. FEEDBACK is disconnected from output and connected to 0 V. To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V versions and to 25 V for the 12-V and 15-V versions.

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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TL2575 Electrical Characteristics (continued)
ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2)
PARAMETER VIH VIL IIH IIL ON/OFF high-level logic input voltage ON/OFF low-level logic input voltage ON/OFF high-level input current ON/OFF low-level input current TEST CONDITIONS OFF (VOUT = 0 V) ON (VOUT = nominal voltage) OFF (ON/OFF = 5 V) ON (ON/OFF = 0 V) TJ 25°C Full range 25°C Full range 25°C 25°C 12 0 TL2575 MIN 2.2 2.4 1.2 1 0.8 30 10 TYP 1.4 MAX UNIT V V ?A ?A

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

TL2575HV Electrical Characteristics
ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2)
PARAMETER TEST CONDITIONS VIN = 12 V, ILOAD = 0.2 A TL2575HV-33 4.75 V ≤ VIN ≤ 60 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 12 V, ILOAD = 0.2 A TL2575HV-05 VOUT Output voltage TL2575HV-12 8 V ≤ VIN ≤ 60 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 25 V, ILOAD = 0.2 A 15 V ≤ VIN ≤ 60 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 30 V, ILOAD = 0.2 A TL2575HV-15 18 V ≤ VIN ≤ 60 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 12 V, VOUT = 5 V, ILOAD = 0.2 A 8 V ≤ VIN ≤ 60 V, VOUT = 5 V, 0.2 A ≤ ILOAD ≤ 1 A VIN = 12 V, ILOAD = 1 A VIN = 12 V, ILOAD = 1 A VIN = 15 V, ILOAD = 1 A VIN = 18 V, ILOAD = 1 A VIN = 12 V, VOUT = 5 V, ILOAD = 1 A VOUT = 5 V (ADJ version only) 25°C Full range 25°C Full range IOUT = 1 A (2) 25°C Full range 25°C 25°C Full range VIN = 60 (4), Output = 0 V VIN = 60 (4), Output = –1 V 25°C 25°C OFF (ON/OFF = 5 V) 25°C 93 1.7 1.3 7.5 5 50 98 2.8 3.6 4 2 30 10 200 47 42 0.9 52 25°C TJ 25°C 25°C Full range 25°C 25°C Full range 25°C 25°C Full range 25°C 25°C Full range 25°C 25°C Full range TL2575HV MIN 3.234 3.168 3.135 4.9 4.8 4.75 11.76 11.52 11.4 14.7 14.4 14.25 1.217 1.193 1.180 75 77 88 88 77 50 100 500 58 63 1.2 1.4 nA kHz V % A mA mA ?A % 15 15 15 1.23 1.23 12 12 5 5 TYP 3.3 3.3 MAX 3.366 3.450 3.482 5.1 5.225 5.275 12.24 12.54 12.66 15.3 15.68 15.83 1.243 1.273 1.286 V V UNIT

Feedback voltage

TL2575HV-ADJ

TL2575HV-33 TL2575HV-05 η Efficiency TL2575HV-12 TL2575HV-15 TL2575HV-ADJ IIB fo VSAT Feedback bias current Oscillator frequency (1) Saturation voltage Maximum duty cycle (3) ICL IL IQ ISTBY (1) (2) (3) (4) Switch peak current (1) (2) Output leakage current Quiescent current (4) Standby quiescent current

In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to ?18 kHz and the minimum duty cycle from 5% to ?2%. The resulting output voltage drops to ?40% of its nominal value, causing the average power dissipated by the IC to lower. Output is not connected to diode, inductor, or capacitor. Output is sourcing current. FEEDBACK is disconnected from output and connected to 0 V. To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V versions and to 25 V for the 12-V and 15-V versions.

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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TL2575HV Electrical Characteristics (continued)
ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2)
PARAMETER VIH VIL IIH IIL ON/OFF high-level logic input voltage TEST CONDITIONS OFF (VOUT = 0 V) TJ 25°C Full range 25°C Full range 25°C 12 0 TL2575HV MIN 2.2 2.4 1.2 1 0.8 30 10 TYP 1.4 MAX UNIT V V ?A ?A

ON/OFF low-level logic input voltage ON (VOUT = nominal voltage) ON/OFF high-level input current ON/OFF low-level input current OFF (ON/OFF = 5 V) ON (ON/OFF = 0 V)

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

TEST CIRCUITS
Fixed-Output Voltage FEEDBACK 4 TL2575-xx Fixed Output OUTPUT 2 VIN Unregulated DC Input + 3 CIN 100 ?F GND 5 ON/OFF L1 330 ?H D1 + COUT 330 ?F L O A D VOUT

+VIN 1

CIN = 100 ?F, Aluminum Electrolytic COUT = 330 ?F, Aluminum Electrolytic D1 = Schottky L1 = 330 ?H (for 5-V VIN with 3.3-V VOUT, use 100 mH)

Adjustable-Output Voltage FEEDBACK 4 TL2575 (ADJ) OUTPUT 2 7-V to 40-V Unregulated DC Input + CIN 100 ?F 3 GND 5 ON/OFF L1 330 ?H R2 D1 11DQ06 + COUT 330 ?F R1 L O A D VOUT

+VIN 1

VOUT = VREF(1 + R2/R1) = 5 V VREF = 1.23 V R1 = 2 kW R2 = 6.12 kW

A.

Pin numbers are for the KTT (TO-263) package.

Figure 2. Test Circuits and Layout Guidelines

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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TYPICAL CHARACTERISTICS
1 0.8 0.6 Output Voltage Change – % 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -50 VIN = 20 V ILOAD = 200 mA
Output Voltage Change – %

1.4 1.2 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 ILOAD = 200 mA TJ = 25°C

TJ = 25°C

-25

0

25

50

75

100

125

150

0

10

20

30

40

50

60

TA – Temperature – °C

VIN – Input Voltage – V

Figure 3. Normalized Output Voltage

Figure 4. Line Regulation

2 1.75 Input-Output Differential – V 1.5
DVOUT = 5% RIND = 0.2 W

3

2.5
IO – Output Current – A

1.25 1 0.75

ILOAD = 1 A

2

1.5

ILOAD = 200 mA

1

0.5 0.25 0 -40 -25 -10

0.5

5

20

35 50

65 80 95 110 125

TJ – Junction Temperature – °C

0 -50

-25

0

25

50

75

100

125

150

TJ – Junction Temperature – °C

Figure 5. Dropout Voltage

Figure 6. Current Limit

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

TYPICAL CHARACTERISTICS (continued)
20 TJ = 25°C Measured at GND pin ISTBY – Standby Quiescent Current – ?A 18 IQ – Quiescent Current – mA 16 14 12 10 8 6 4 2 0 0 10 20 30 40 50 60 ILOAD = 0.2 A ILOAD = 1 A VOUT = 5 V 500
VON/OFF = 5 V

450 VIN = 40 V 400 350 300 250 200 150 100 50 0 -50 VIN = 12 V

-25

0

25

50

75

100

125

150

VIN – Input Voltage – V

TJ – Junction Temperature – °C

Figure 7. Quiescent Current

Figure 8. Standby Quiescent Current

10 Normalized at TJ = 25°C 8

1.2 1.1

f NORM – Normalized Frequency – %

6
VSAT – Saturation Voltage – V

VIN = 12 V 4 2 0 -2 -4 -6 -8 -10 -50 VIN = 40 V

1 0.9 0.8 TJ = 25°C 0.7 0.6 TJ = 125°C 0.5 0.4 0 0.2 0.4 0.6 0.8 1 TJ = –40°C

-25

0

25

50

75

100

125

150

TJ – Junction Temperature – °C

ISW – Switch Current – A

Figure 9. Oscillator Frequency

Figure 10. Switch Saturation Voltage

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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TYPICAL CHARACTERISTICS (continued)
5 Adjustable version only 4.5 4 VIN – Input Voltage – V 3.5 3 2.5 2 1.5 1 0.5 0 -50

100 90 80 Adjustable version only

IIB – Feedback Bias Current – nA

70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -50 -25 0 25 50 75 100 125 150

-25

0

25

50

75

100

125

150

TJ – Junction Temperature – °C

TJ – Junction Temperature – °C

Figure 11. Minimum Operating Voltage
VOUT = 5 V

Figure 12. FEEDBACK Current

A

{
{

0V

B

0A

C

{

0A

{
4 ?s/Div

D

A. B. C. D.

Output pin voltage, 10 V/Div Output pin current, 1 A/Div Inductor current, 0.5 A/Div Ouput ripple voltage, 20 mV/Div Figure 13. Switching Waveforms

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

TYPICAL CHARACTERISTICS (continued)
0.2 0.15 0.1 0.05 0 -0.05 -0.1 -0.15 -0.2 -0.1

ILOAD – Load Current – A

0

0.1

0.2

0.3

0.4 t – Time – ms

0.5

0.6

0.7

0.8

0.9

1.6 1.4 1.2

ILOAD – Load Current – A

1 0.8 0.6 0.4 0.2 0 -0.1

0

0.1

0.2

0.3

0.4 t – Time – ms

0.5

0.6

0.7

0.8

0.9

Figure 14. Load Transient Response

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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APPLICATION INFORMATION Input Capacitor (CIN)
For stability concerns, an input bypass capacitor (electrolytic, CIN ≥ 47 ?F) needs to be located as close as possible to the regulator. For operating temperatures below –25°C, CIN may need to be larger in value. In addition, since most electrolytic capacitors have decreasing capacitances and increasing ESR as temperature drops, adding a ceramic or solid tantalum capacitor in parallel increases the stability in cold temperatures. To extend the capacitor operating lifetime, the capacitor RMS ripple current rating should be: IC,RMS > 1.2(ton/T)ILOAD where ton/T = VOUT/VIN {buck regulator} and ton/T = |VOUT|/(|VOUT| + VIN) {buck-boost regulator}

Output Capacitor (COUT)
For both loop stability and filtering of ripple voltage, an output capacitor also is required, again in close proximity to the regulator. For best performance, low-ESR aluminum electrolytics are recommended, although standard aluminum electrolytics may be adequate for some applications. Based on the following equation: Output ripple voltage = (ESR of COUT) × (inductor ripple current) Output ripple of 50 mV to 150 mV typically can be achieved with capacitor values of 220 ?F to 680 ?F. Larger COUT can reduce the ripple 20 mV to 50 mV peak to peak. To improve further on output ripple, paralleling of standard electrolytic capacitors may be used. Alternatively, higher-grade capacitors such as high frequency, low inductance, or low ESR can be used. The following should be taken into account when selecting COUT: ? At cold temperatures, the ESR of the electrolytic capacitors can rise dramatically (typically 3× nominal value at –25°C). Because solid tantalum capacitors have significantly better ESR specifications at cold temperatures, they should be used at operating temperature lower than –25°C. As an alternative, tantalums also can be paralleled to aluminum electrolytics and should contribute 10% to 20% to the total capacitance. ? Low ESR for COUT is desirable for low output ripple. However, the ESR should be greater than 0.05 ? to avoid the possibility of regulator instability. Hence, a sole tantalum capacitor used for COUT is most susceptible to this occurrence. ? The capacitor’s ripple current rating of 52 kHz should be at least 50% higher than the peak-to-peak inductor ripple current.

Catch Diode
As with other external components, the catch diode should be placed close to the output to minimize unwanted noise. Schottky diodes have fast switching speeds and low forward voltage drops and, thus, offer the best performance, especially for switching regulators with low output voltages (VOUT < 5 V). If a high-efficiency, fast-recovery, or ultra-fast-recovery diode is used in place of a Schottky, it should have a soft recovery (versus abrupt turn-off characteristics) to avoid the chance of causing instability and EMI. Standard 50-/60-Hz diodes, such as the 1N4001 or 1N5400 series, are not suitable.

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

APPLICATION INFORMATION (continued) Inductor
Proper inductor selection is key to the performance-switching power-supply designs. One important factor to consider is whether the regulator is used in continuous mode (inductor current flows continuously and never drops to zero) or in discontinuous mode (inductor current goes to zero during the normal switching cycle). Each mode has distinctively different operating characteristics and, therefore, can affect the regulator performance and requirements. In many applications, the continuous mode is the preferred mode of operation, since it offers greater output power with lower peak currents, and also can result in lower output ripple voltage. The advantages of continuous mode of operation come at the expense of a larger inductor required to keep inductor current continuous, especially at low output currents and/or high input voltages. The TL2575 and TL2575HV can operate in either continuous or discontinuous mode. With heavy load currents, the inductor current flows continuously and the regulator operates in continuous mode. Under light load, the inductor fully discharges and the regulator is forced into the discontinuous mode of operation. For light loads (approximately 200 mA or less), this discontinuous mode of operation is perfectly acceptable and may be desirable solely to keep the inductor value and size small. Any buck regulator eventually operates in discontinuous mode when the load current is light enough. The type of inductor chosen can have advantages and disadvantages. If high performance/quality is a concern, then more-expensive toroid core inductors are the best choice, as the magnetic flux is contained completely within the core, resulting in less EMI and noise in nearby sensitive circuits. Inexpensive bobbin core inductors, however, generate more EMI as the open core does not confine the flux within the core. Multiple switching regulators located in proximity to each other are particularly susceptible to mutual coupling of magnetic fluxes from each other’s open cores. In these situations, closed magnetic structures (such as a toroid, pot core, or E-core) are more appropriate. Regardless of the type and value of inductor used, the inductor never should carry more than its rated current. Doing so may cause the inductor to saturate, in which case the inductance quickly drops, and the inductor looks like a low-value resistor (from the dc resistance of the windings). As a result, switching current rises dramatically (until limited by the current-by-current limiting feature of the TL2575 and TL2575HV) and can result in overheating of the inductor and the IC itself. Note that different types of inductors have different saturation characteristics.

Output Voltage Ripple and Transients
As with any switching power supply, the output of the TL2575 and TL2575HV have a sawtooth ripple voltage at the switching frequency. Typically about 1% of the output voltage, this ripple is due mainly to the inductor sawtooth ripple current and the ESR of the output capacitor (see note on COUT). Furthermore, the output also may contain small voltage spikes at the peaks of the sawtooth waveform. This is due to the fast switching of the output switch and the parasitic inductance of COUT. These voltage spikes can be minimized through the use of low-inductance capacitors. There are several ways to reduce the output ripple voltage: a larger inductor, a larger COUT, or both. Another method is to use a small LC filter (20 ?H and 100 ?F) at the output. This filter can reduce the output ripple voltage by a factor of 10 (see Figure 2).

Feedback Connection
For fixed-voltage options, FEEDBACK must be wired to VOUT. For the adjustable version, FEEDBACK must be connected between the two programming resistors. Again, both of these resistors should be in close proximity to the regulator, and each should be less than 100 k? to minimize noise pickup.

ON/OFF Input
ON/OFF should be grounded or be a low-level TTL voltage (typically <1.6 V) for normal operation. To shut down the TL2575 or TL2575HV and put it in standby mode, a high-level TTL or CMOS voltage should be supplied to this pin. ON/OFF should not be left open and safely can be pulled up to VIN with or without a pullup resistor.

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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APPLICATION INFORMATION (continued) Grounding
The power and ground connections of the TL2575 and TL2575HV must be low impedance to help maintain output stability. For the 5-pin packages, both pin 3 and tab are ground, and either connection can be used as they are both part of the same lead frame. With the 16-pin package, all the ground pins (including signal and power grounds) should be soldered directly to wide PCB copper traces to ensure low-inductance connections and good thermal dissipation.

Layout Guidelines
With any switching regulator, circuit layout plays an important role in circuit performance. Wiring and parasitic inductances, as well as stray capacitances, are subjected to rapidly switching currents, which can result in unwanted voltage transients. To minimize inductance and ground loops, the length of the leads indicated by heavy lines should be minimized. Optimal results can be achieved by single-point grounding (see Figure 2) or by ground-plane construction. For the same reasons, the two programming resistors used in the adjustable version should be located as close as possible to the regulator to keep the sensitive feedback wiring short.

16

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

BUCK REGULATOR DESIGN PROCEDURE
PROCEDURE (Fixed Output) Known: VOUT = 3.3 V, 5 V, 12 V, or 15 V VIN(Max) = Maximum input voltage ILOAD(Max) = Maximum load current 1. Inductor Selection (L1) Known: VOUT = 5 V VIN(Max) = 20 V ILOAD(Max) = 1 A 1. Inductor Selection (L1) EXAMPLE (Fixed Output)

A. From Figure 15 through Figure 18, select the appropriate inductor A. From Figure 16 (TL2575-05), the intersection of 20-V line and code based on the intersection of VIN(Max) and ILOAD(Max). 1-A line gives an inductor code of L330. B. From Table 2, choose the appropriate inductor based on the inductor code. Parts from three well-known inductor manufacturers are given. The inductor chosen should be rated for operation at 52-kHz and have a current rating of at least 1.15 × ILOAD(Max) to allow for the ripple current. The actual peak current in L1 (in normal operation) can be calculated as follows: IL1(pk) = ILOAD(Max) + (VIN – VOUT) × ton/2L1 Where ton = VOUT/VIN× (1/fosc) 2. Output Capacitor Selection (COUT) B. L330 → L1 = 330 ?H Choose from: 34042 (Schott) PE-52627 (Pulse Engineering) RL1952 (Renco)

2. Output Capacitor Selection (COUT)

A. The TL2575 control loop has a two-pole two-zero frequency A. COUT = 100-?F to 470-?F, standard aluminum electrolytic response. The dominant pole-zero pair is established by COUT and L1. To meet stability requirements while maintaining an acceptable output ripple voltage (Vripple ≈ 0.01 × VOUT), the recommended range for a standard aluminum electrolytic COUT is between 100 ?F and 470 ?F. B. COUT should have a voltage rating of at least 1.5 × VOUT. But if a low output ripple voltage is desired, choose capacitors with a higher-voltage ratings than the minimum required, due to their typically lower ESRs. 3. Catch Diode Selection (D1) (see Table 1) B. Although a COUT rated at 8 V is sufficient for VOUT = 5 V, a higher-voltage capacitor is chosen for its typically lower ESR (and hence lower output ripple voltage) → Capacitor voltage rating = 20 V. 3. Catch Diode Selection (D1) (see Table 1)

A. In normal operation, the catch diode requires a current rating of A. Pick a diode with 3-A rating. at least 1.2 × ILOAD(Max). For the most robust design, D1 should be rated to handle a current equal to the TL2575 maximum switch peak current; this represents the worst-case scenario of a continuous short at VOUT. B. The diode requires a reverse voltage rating of at least 1.25 × VIN(Max). 4. Input Capacitor (CIN) An aluminum electrolytic or tantalum capacitor is needed for input bypassing. Locate CIN as close to the VIN and GND pins as possible. B. Pick 30-V rated Schottky diode (1N5821, MBR330, 31QD03, or SR303) or 100-V rated Fast Recovery diode (31DF1, MURD310, or HER302). 4. Input Capacitor (CIN) CIN = 100 ?F, 25 V, aluminum electrolytic

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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PROCEDURE (Adjustable Output) Known: VOUT(Nom) VIN(Max) = Maximum input voltage ILOAD(Max) = Maximum load current 1. Programming Output Voltage (Selecting R1 and R2) Referring to Fig. 2, VOUT is defined by: VOUT = VREF 1 + R2 where VREF = 1.23 V R1 Known: VOUT = 10 V VIN(Max) = 25 V ILOAD(Max) = 1 A

EXAMPLE (Adjustable Output)

(

(

1. Programming Output Voltage (Selecting R1 and R2) Select R1 = 1 k? R2 = 1 (10/1.23 – 1) = 7.13 k? Select R2 = 7.15 k? (closest 1% value)

Choose a value for R1 between 1 k? and 5 k? (use 1% metal-film resistors for best temperature coefficient and stability over time). VOUT –1 R2 = R1 VREF

(

(

2. Inductor Selection (L1) A. Calculate the "set" volts-second (E?T) across L1: E?T = (VIN – VOUT) × ton E?T = (VIN – VOUT) × (VOUT/VIN) × {1000/fosc(in kHz)} [V??s] NOTE: Along with ILOAD, the "set" volts-second (E?T) constant establishes the minimum energy storage requirement for the inductor. B. Using Figure 19, select the appropriate inductor code based on the intersection of E?T value and ILOAD(Max). C. From Table 2, choose the appropriate inductor based on the inductor code. Parts from three well-known inductor manufacturers are given. The inductor chosen should be rated for operation at 52-kHz and have a current rating of at least 1.15 x ILOAD(Max) to allow for the ripple current. The actual peak current in L1 (in normal operation) can be calculated as follows: IL1(pk) = ILOAD(Max) + (VIN – VOUT) × ton/2L1 Where ton = VOUT/VIN × (1/fosc) 3. Output Capacitor Selection (COUT) A. The TL2575 control loop has a two-pole two-zero frequency response. The dominant pole-zero pair is established by COUT and L1. To meet stability requirements, COUT must meet the following requirement: VIN(Max) (?F) COUT ? 7758 VOUT · L1(?H) However, COUT may need to be several times larger than the calculated value above in order to achieve an acceptable output ripple voltage of ~0.01 × VOUT. B. COUT should have a voltage rating of at least 1.5 × VOUT. But if a low output ripple voltage is desired, choose capacitors with a higher voltage ratings than the minimum required due to their typically lower ESRs. 4. Catch Diode Selection (D1) (see Table 1) A. In normal operation, the catch diode requires a current rating of at least 1.2 × ILOAD(Max). For the most robust design, D1 should be rated for a current equal to the TL2575 maximum switch peak current; this represents the worst-case scenario of a continuous short at VOUT. B. The diode requires a reverse voltage rating of at least 1.25 × VIN(Max). 5. Input Capacitor (CIN) An aluminum electrolytic or tantalum capacitor is needed for input bypassing. Locate CIN as close to VIN and GND pins as possible.

2. Inductor Selection (L1) A. Calculate the "set" volts-second (E?T) across L1: E?T = (25 – 10) × (10/25) × (1000/52) [V??s] E?T = 115 V??s

B. Using Figure 19, the intersection of 115 V??s and 1 A corresponds to an inductor code of H470. C. H470 → L1 = 470 ?F Choose from: 34048 (Schott) PE-53118 (Pulse Engineering) RL1961 (Renco)

3. Output Capacitor Selection (COUT) A.COUT ≥ 7785 × 25/(10 × 470) [?F] COUT ≥ 41.4 ?F To obtain an acceptable output voltage ripple → COUT = 220 ?F electrolytic

4. Catch Diode Selection (D1) (see Table 1) A. Pick a diode with a 3-A rating.

B. Pick a 40-V rated Schottky diode (1N5822, MBR340, 31QD04, or SR304) or 100-V rated Fast Recovery diode (31DF1, MURD310, or HER302) 5. Input Capacitor (CIN) CIN = 100 ?F, 35 V, aluminum electrolytic

18

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

Inductor Value Selection Guide for Continuous-Mode Operation

Figure 15. TL2575-33

Figure 16. TL2575-50

Figure 17. TL2575-12

Figure 18. TL2575-15

Figure 19. TL2575-ADJ

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TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007

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Table 1. Diode Selection Guide
VR SCHOTTKY 1A 1N5817 MBR120P SR102 1N5818 MBR130P 11DQ03 SR103 1N5819 MBR140P 11DQ04 SR104 MBR150 11DQ05 SR105 MBR160 11DQ06 SR106 3A 1N5820 MBR320 SR302 1N5821 MBR330 31DQ03 SR303 IN5822 MBR340 31DQ04 SR304 MBR350 31DQ05 SR305 MBR360 31DQ06 SR306 1A FAST RECOVERY 3A

20 V

30 V

40 V

The following diodes The following diodes are all rated to 100 V: are all rated to 100 V: 11DF1 31DF1 MUR110 MURD310 HER102 HER302

50 V

60 V

Table 2. Inductor Selection by Manufacturer's Part Number
INDUCTOR CODE L100 L150 L220 L330 L470 L680 H150 H220 H330 H470 H680 H1000 H1500 H2200 (1) (2) (3) INDUCTOR VALUE (?H) 100 150 220 330 470 680 150 220 330 470 680 1000 1500 2200 SCHOTT CORPORATION (1) 67127000 67127010 67127020 67127030 67127040 67127050 67127060 67127070 67127080 67127090 67127100 67127110 67127120 67127130 PULSE ENGINEERING (2) PE-92108 PE-53113 PE-52626 PE-52627 PE-53114 PE-52629 PE-53115 PE-53116 PE-53117 PE-53118 PE-53119 PE-53120 PE-53121 PE-53122 RENCO ELECTRONICS (3) RL2444 RL1954 RL1953 RL1952 RL1951 RL1950 RL2445 RL2446 RL2447 RL1961 RL1960 RL1959 RL1958 RL2448

Schott Corporation, (612) 475-1173, 1000 Parkers Lake Rd., Wayzata, MN 55391 Pulse Engineering, (619) 674-8100, P.O. Box 12236, San Diego, CA 92112 Renco Electronics Inc., (516) 586-5566, 60 Jeffryn Blvd. East, Deer Park, NY 11729

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PACKAGING INFORMATION
Orderable Device TL2575-05IKTTR TL2575-05IKTTRG3 TL2575-05IKV TL2575-05IN TL2575-05INE4 TL2575-12IKTTR TL2575-12IKTTRG3 TL2575-12IKV TL2575-12IN TL2575-12INE4 TL2575-15IKTTR TL2575-15IKTTRG3 TL2575-15IKV TL2575-15IN TL2575-15INE4 TL2575-33IKTTR TL2575-33IKTTRG3 TL2575-33IKV TL2575-33IN TL2575-33INE4 TL2575-ADJIKTTR TL2575-ADJIKTTRG3 Status
(1)

Package Type Package Drawing DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 KTT KTT KV N N KTT KTT KV N N KTT KTT KV N N KTT KTT KV N N KTT KTT

Pins 5 5 5 16 16 5 5 5 16 16 5 5 5 16 16 5 5 5 16 16 5 5

Package Qty 500 500 50 25 25 500 500 50 25 25 500 500 50 25 25 500 500 50 25 25 500 500

Eco Plan

(2)

Lead/ Ball Finish CU SN CU SN CU SN CU NIPD CU NIPD CU SN CU SN CU SN CU NIPD CU NIPD CU SN CU SN CU SN CU NIPD CU NIPD CU SN CU SN CU SN CU NIPD CU NIPD CU SN CU SN

MSL Peak Temp

(3)

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ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE

Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br)

Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR Level-3-245C-168 HR

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PACKAGE OPTION ADDENDUM

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Orderable Device TL2575-ADJIKV TL2575-ADJIN TL2575-ADJINE4 TL2575HV-05IKTTR TL2575HV-05IKTTRG3 TL2575HV-05IKV TL2575HV-05IN TL2575HV-05INE4 TL2575HV-12IKTTR TL2575HV-12IKTTRG3 TL2575HV-12IKV TL2575HV-12IN TL2575HV-12INE4 TL2575HV-15IKTTR TL2575HV-15IKTTRG3 TL2575HV-15IKV TL2575HV-15IN TL2575HV-15INE4 TL2575HV-33IKTTR TL2575HV-33IKTTRG3 TL2575HV-33IKV TL2575HV-33IN TL2575HV-33INE4 TL2575HV-ADJIKTTR

Status

(1)

Package Type Package Drawing TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 DDPAK/ TO-263 TO-220 PDIP PDIP DDPAK/ TO-263 KV N N KTT KTT KV N N KTT KTT KV N N KTT KTT KV N N KTT KTT KV N N KTT

Pins 5 16 16 5 5 5 16 16 5 5 5 16 16 5 5 5 16 16 5 5 5 16 16 5

Package Qty 50 25 25 500 500 50 25 25 500 500 50 25 25 500 500 50 25 25 500 500 50 25 25 500

Eco Plan

(2)

Lead/ Ball Finish CU SN CU NIPD CU NIPD CU SN CU SN CU SN CU NIPD CU NIPD CU SN CU SN CU SN CU NIPD CU NIPD CU SN CU SN CU SN CU NIPD CU NIPD CU SN CU SN CU SN CU NIPD CU NIPD CU SN

MSL Peak Temp N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type

(3)

Samples (Requires Login) Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples Request Free Samples

ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE

Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS) Green (RoHS & no Sb/Br)

Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR Level-3-245C-168 HR N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type Level-3-245C-168 HR

Addendum-Page 2

PACKAGE OPTION ADDENDUM

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Orderable Device TL2575HV-ADJIKV TL2575HV-ADJIN TL2575HV-ADJINE4
(1)

Status

(1)

Package Type Package Drawing TO-220 PDIP PDIP KV N N

Pins 5 16 16

Package Qty 50 25 25

Eco Plan

(2)

Lead/ Ball Finish CU SN CU NIPD CU NIPD

MSL Peak Temp N / A for Pkg Type N / A for Pkg Type N / A for Pkg Type

(3)

Samples (Requires Login) Request Free Samples Request Free Samples Request Free Samples

ACTIVE ACTIVE ACTIVE

Pb-Free (RoHS) Pb-Free (RoHS) Pb-Free (RoHS)

The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device.
(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 3

PACKAGE MATERIALS INFORMATION
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11-Mar-2008

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device

Package Package Pins Type Drawing DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 DDPAK/ TO-263 KTT KTT KTT KTT KTT KTT KTT KTT KTT KTT 5 5 5 5 5 5 5 5 5 5

SPQ

Reel Reel Diameter Width (mm) W1 (mm) 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 24.4 24.4 24.4 24.4 24.4 24.4 24.4 24.4 24.4 24.4

A0 (mm)

B0 (mm)

K0 (mm)

P1 (mm) 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0

W Pin1 (mm) Quadrant 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 Q2 Q2 Q2 Q2 Q2 Q2 Q2 Q2 Q2 Q2

TL2575-05IKTTR TL2575-12IKTTR TL2575-15IKTTR TL2575-33IKTTR TL2575-ADJIKTTR TL2575HV-05IKTTR TL2575HV-12IKTTR TL2575HV-15IKTTR TL2575HV-33IKTTR TL2575HV-ADJIKTTR

500 500 500 500 500 500 500 500 500 500

10.6 10.6 10.6 10.6 10.6 10.6 10.6 10.6 10.6 10.6

15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8

4.9 4.9 4.9 4.9 4.9 4.9 4.9 4.9 4.9 4.9

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION
www.ti.com

11-Mar-2008

*All dimensions are nominal

Device TL2575-05IKTTR TL2575-12IKTTR TL2575-15IKTTR TL2575-33IKTTR TL2575-ADJIKTTR TL2575HV-05IKTTR TL2575HV-12IKTTR TL2575HV-15IKTTR TL2575HV-33IKTTR TL2575HV-ADJIKTTR

Package Type DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263 DDPAK/TO-263

Package Drawing KTT KTT KTT KTT KTT KTT KTT KTT KTT KTT

Pins 5 5 5 5 5 5 5 5 5 5

SPQ 500 500 500 500 500 500 500 500 500 500

Length (mm) 340.0 340.0 340.0 340.0 340.0 340.0 340.0 340.0 340.0 340.0

Width (mm) 340.0 340.0 340.0 340.0 340.0 340.0 340.0 340.0 340.0 340.0

Height (mm) 38.0 38.0 38.0 38.0 38.0 38.0 38.0 38.0 38.0 38.0

Pack Materials-Page 2

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