XL8002

XLSEMI 80V 1A High Efficiency Buck PFM LED Constant Current Driver Features n n n n n n n n n n Preliminary Datasheet XL8002 General Description The XL8002 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a 12V~80V DC power supply. The XL8002 is a high efficiency LED driver switching regulator. The LED string is driven at DC constant current rather than constant voltage, thus providing constant light output and enhanced reliability. Operation Voltage DC 12V~80V. 0.1V current sense voltage reference. Directly drive 1~18 Series 1W/3W LED. Excellent line and load regulation. Internal Optimize Power HV-MOSFET. Built in Thermal Shutdown Function. Built in Current Limiting Function. Built in Soft-Start Circuit. Available in TO263-5L package. Up to 98% efficiency. Applications n n LED Lighting & LED LAMP General purpose LED lighting Figure1. Package Type of XL8002 Rev 1.0 1 www.xlsemi.com Free Datasheet http://www.Datasheet4U.com XLSEMI 80V 1A High Efficiency Buck PFM LED Constant Current Driver Pin Configurations Preliminary Datasheet XL8002 The back exposed PAD is VIN Figure2. Pin Configuration of XL8002 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5 Pin Name START VREG VIN CSN CSP Description Internal soft start Pin. Internal Voltage Regulation Pin. (The VREG is about 8V) Input high voltage Pin. (Operation voltage 12V~80V) Current Sense Negative Pin. Current Sense Positive Pin. (The current sense voltage ...