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XL3003

Xlsemi
Part Number XL3003
Manufacturer Xlsemi
Description 4A 220KHz 36V Buck LED Constant Current Driver
Published Sep 21, 2014
Detailed Description XLSEMI 4A 220KHz 36V Buck LED Constant Current Driver Features n n n n n n n n n n n n n Wide 8V to 36V Input Voltage Ra...
Datasheet PDF File XL3003 PDF File

XL3003
XL3003

Overview
XLSEMI 4A 220KHz 36V Buck LED Constant Current Driver Features n n n n n n n n n n n n n Wide 8V to 36V Input Voltage Range Output Current Sence Voltage is 0.
21V Maximum Duty Cycle 100% Minimum Drop Out 0.
3V Fixed 220KHz Switching Frequency 4A Constant Output Current Capability Internal Optimize Power MOSFET High efficiency Excellent line and load regulation Built in thermal shutdown function Built in current limit function Built in output short protection function Available in TO-252 package Datasheet XL3003 General Description The XL3003 is a 220 KHz fixed frequency PWM buck (step-down) LED constant current driver, capable of driving a 4A load with high efficiency, low ripple and excellent line and load regulation.
Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator.
The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%.
An over current protection function is built inside.
When short protection function happens, the operation frequency will be reduced from 220KHz to 60KHz.
An internal compensation block is built in to minimize external component count.
Applications n n n Buck constant current driver Monitor LED Backlighting General purpose LED lighting Figure1.
Package Type of XL3003 Rev 1.
2 1 www.
xlsemi.
com XLSEMI 4A 220KHz 36V Buck LED Constant Current Driver Pin Configurations Datasheet XL3003 Figure2.
Pin Configuration of XL3003 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5 Pin Name GND CS SW VC VIN Description Ground Pin.
Care must be taken in layout.
This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL3003.
Output constant current sense Pin (CS).
The CS reference voltage is 0.
21V.
Power Switch Output Pin (SW).
SW is the switch node that supplies power to the output.
Internal Voltage Regulator Bypass Cap...


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