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升压型LED恒流驱动器芯片XL6003


Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
Features
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XL6003

General Description
The XL6003 regulator is fixed frequency PWM Boost (step-up) LED constant current driver, capable of driving Series 1W LED units with excellent line and load regulation. The regulator is simple to use because it includes internal frequency compensation and a fixed-frequency oscillator so that it requires a minimum number of external components to work. The XL6003 could directly drive 6 Series 1W LED units at VIN>12V .

Wide 5V to 18V Input Voltage Range 0.22V FB adjustable LED drive current Directly drive 6 Series 1W LED at VIN>=12V Fixed 400KHz Switching Frequency Max. 2A Switching Current Capability Up to 92% efficiency Excellent line and load regulation EN PIN TTL shutdown capability & With PWM Dimming Function Internal Optimize Power MOSFET Built in Soft-Start Function Built in Frequency Compensation Built in Thermal Shutdown Function Built in Current Limit Function Available in SOP8 package

The PWM control circuit is able to adjust the duty ratio linearly from 0 to 95%. An enable function, an over current protection function is built inside. An internal compensation block is built in to minimize external component count.

Applications
n n n n LED Lighting Boost constant current driver Monitor LED Backlighting 7’ to 15’ LCD Panels

Figure1. Package Type of XL6003

Rev 1.4 1

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
Pin Configurations

XL6003

EN VIN FB NC

1 2 XL6003 3 4

8 7 6 5

GND GND SW SW

Figure2. Pin Configuration of XL6003 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5,6 7,8 Pin Name EN VIN FB NC SW GND Description Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. Supply Voltage Input Pin. XL6003 operates from a 5V to 18V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. Feedback Pin (FB). The feedback threshold voltage is 0.22V. No Connected. Power Switch Output Pin (SW). Output is the switch node that supplies power to the output. Ground Pin.

Rev 1.4 2

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
Function Block

XL6003

Figure3. Function Block Diagram of XL6003

Typical Application Circuit

Figure4. XL6003 Typical Application Circuit

Rev 1.4 3

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
Ordering Information
Part Number Lead Free XL6003E1 XL6003TRE1 Marking ID Lead Free XL6003E1 XL6003E1

XL6003

Package

Temperature Range

Packing Type Tube Tape & Reel

XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant.

Absolute Maximum Ratings(Note1)
Parameter Input Voltage Feedback Pin Voltage EN Pin Voltage Output Switch Pin Voltage Power Dissipation Thermal Resistance (SOP8) (Junction to Ambient, No Heatsink, Free Air) Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) ESD (HBM) Symbol Vin VFB VEN VOutput PD RJA TJ TSTG TLEAD Value -0.3 to 20 -0.3 to Vin -0.3 to Vin -0.3 to 42 Internally limited 100 -40 to 125 -65 to 150 260 >2000 Unit V V V V mW ?C/W ?C ?C ?C V

Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

Rev 1.4 4

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
XL6003 Electrical Characteristics
Ta = 25℃;unless otherwise specified. Symbol Parameter Test Condition Min. Typ.

XL6003

Max.

Unit

System parameters test circuit figure4 VFB Efficiency Feedback Voltage Vin = 5V to 12V, Vout=24V Iload=100mA Vin=12V ,Vout=24V Iout=0.3A 209 220 92 231 mV %

?

Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 100uf/50V capacitor; Iout=100mA, Ta = 25℃; the others floating unless otherwise specified. Parameters Input operation voltage Shutdown Supply Current Quiescent Supply Current Oscillator Frequency Switch Current Limit Output Power NMOS Symbol Vin ISTBY Iq Fosc IL Rdson VFB =0 Vin=12V, ISW=2A High (Regulator ON) Low (Regulator OFF) VEN =2V (ON) VEN =0V (OFF) VFB=0V VEN=0V VEN =2V, VFB =Vin 320 Test Condition Min. 5 70 2.5 400 2 110 120 Typ. Max. 18 100 5 480 Unit V uA mA Khz A mohm

EN Pin Threshold EN Pin Input Leakage Current Max. Duty Cycle

VEN IH IL DMAX

1.4 0.8 3 3 90 10 10

V uA uA %

Rev 1.4 5

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
Schottky Diode Selection Table
Current Surface Through VR (The same as system maximum input voltage) Mount Hole 20V 30V 40V 50V 1N5817 1N5818 1N5819 √ √ √ 3A √ √ √ √ SR302 1N5820 MBR320 SK32 1N5821 MBR330 SK33 30WQ03 31DQ03 SR303 1N5822 MBR340 MBR350 SK34 31DQ04 SR304 SK35 31DQ05 SR305 30WQ04 30WQ05

XL6003

60V

1A

MBR360 SK36

SR306

Typical System Application for VIN=5V to driver 3 x 1W series LED units

L 22uh/2A

D1 SK34 COUT 47uf/35V SW 5,6 Series 3 1W LED FB

VIN

2 XL6003 3 7,8 1 GND EN

+5V CIN 47uf /16V

ON OFF

RS 350mA ILED=0.22/RS

Figure5. XL6003 System Parameters Test Circuit (5V ~ 3 x 1W LED)

Rev 1.4 6

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver

XL6003

Typical System Application for VIN>=12V to driver 6 x 1W series LED units

Figure6. XL6003 System Parameters Test Circuit (12V ~ 6 x 1W LED)

Typical System Application for VIN>=12V to driver 6 series x 28 parallel White LED Array

Figure7. XL6003 System Parameters Test Circuit (12V ~ 6 x 28 White LED)

Rev 1.4 7

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
Typical System Application for SEPIC Buck-Boost LED Driver

XL6003

Figure8. XL6003 System Parameters Test Circuit (Buck-Boost LED Driver)

Typical System Application for VIN>=12V to driver 6 x 1W series LED units With Dimming Function

Figure9. XL6003 System Parameters Test Circuit (12V ~ 6 x 1W LED with Dimming Function)

Rev 1.4 8

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Datasheet

400KHz 42V 2A Switching Current Boost LED Constant Current Driver
Package Information
SOP8 Package Mechanical Dimensions

XL6003

Rev 1.4 9

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