降压型LED恒流驱动器芯片(高电压型) XL8003

Features
n Wide 24V to 80V Input Voltage Range
n 0.2V current sense voltage reference.
n Directly drive 3~8 series 1W LED.
n Excellent line and load regulation.
n High efficiency up to 96%.
n Internal optimize power HV-MOSFET.
n Built in thermal shutdown function.
n Built in UVLO function.
n Built in current limiting function.
n Built in LED open & short protection.
n Built in soft-start circuit.
n Available in SOIC-8 package.
Applications
n EBIKE LED Lighting
n LED Lighting & LED LAMP
n General purpose lighting
General Description
The XL8003 is a monolithic high voltage
switching regulator with PFM that is
specifically designed to operate from a
24V~80V DC supply.
The XL8003 is a high efficiency LED driver
switching regulator. The LED string is driven
at DC constant current rather than constant
voltage, thus providing constant current
output and enhanced reliability.
Figure1. Package T*e of XL8003