XL5003 Datasheet | XLSEMI

Features n Operate from a rectified 85V~265V AC mains supply. n 0.2V current sense voltage reference. n Directly drive 2~8 series 1W LED. n Excellent line and load regulation. 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 Support without electrolytic capacitor System solution. n Available in SOIC-8 package. n PF > 0.9 (Power Factor) with suitable External ponents. General Description The XL5003 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a rectified 85V~265V AC mains supply. The XL5003 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. Applications n E27, GU10, GU5.3, B22 lamp device n LED daylight lamp n LED Lighting & LED LAMP n General purpose lighting Figure1. Package Type of XL5003 Rev 3.0 .xlsemi. 1 XLSEMI 600V 0.5A Switching Current Buck PFM LED Constant Current Driver Pin Configurations NC 1 8 VSS VDD 2 7 VSS IS 3 6 VIN SW 4 5 VIN Figure2. Pin Configuration of XL5003 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5，6 7，8 Pin Name NC VDD IS SW VIN VSS Description No Connected. The chip supply voltage. Current Sense Pin. (The current sense voltage is 0.2V) Output Switching Pin Input high voltage Pin. (Operation voltage 100V~400V) The chip reference ground. Function Block Rev 3.0 Figure3. Function Block Diagram of XL5003 .xlsemi. XLSEMI 600V 0.5A Switching Current Buck PFM LED Constant Current Driver Typical application circuit Figure4. XL5003 Typical Application (Mains supply 2W~8W LED saving energy lamp) Rev 3.0 .xlsemi....