XL8004

XLSEMI 80V 1A Switching Current Buck PFM LED Constant Current Driver Features n n n n n n n n n n n n Datasheet XL8004 General Description The XL8004 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a 24V~80V DC supply. The XL8004 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. Wide 24V to 80V Input Voltage Range 0.2V current sense voltage reference. Directly drive 3~8 series LED. Excellent line and load regulation. High efficiency up to 96%. Internal optimize power HV-MOSFET. Built in thermal shutdown function. Built in UVLO function. Built in current limiting function. Built in LED open & short protection. Built in soft-start circuit. Available in TO252-5L package. Applications n n n EBIKE LED Lighting LED Lighting & LED LAMP General purpose lighting Figure1. Package Type of XL8004 Rev 1.0 1 www.xlsemi.com Free Datasheet http://www.Datasheet4U.com XLSEMI 80V 1A Switching Current Buck PFM LED Constant Current Driver Pin Configurations Datasheet XL8004 Figure2. Pin Configuration of XL8004 (Top View) Table 1 Pin Description Pin Number 1 2 3 4, 5 Pin Name VDD CSN VIN CSP Description The chip supply voltage. Current Sense Negative Terminal. Input high voltage Pin. (Operation voltage 24V~ 80V) Current Sense Positive Terminal. Function Block Figure3. Function Block D...