XL4501 Datasheet | XLSEMI

Features - Wide 8V to 36V Input Voltage Range - Output Adjustable from 1.25V to 32V - Minimum Drop Out 0.3V - Fixed 150KHz Switching Frequency - Maximum 5A Switching Current - Internal Optimize Power MOSFET - Excellent line and load regulation - With output constant current loop - Built in thermal shutdown function - Built in current limit function - Available in TO263-5L package Applications - Car Charger - Battery Charger - LCD Monitor and LCD TV - Portable instrument power supply - Tele / Networking Equipment - Buck constant current driver - Monitor LED Backlighting - General purpose LED lighting General Description The XL4501 is a 150KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 4.5A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external ponents, the regulator is simple to use and include internal frequency pensation and a fixed-frequency oscillator. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An enable function, an over current protection function is built inside. An internal pensation block is built in to minimize external ponent count. Rev1.4 Figure1. Package Type of XL4501 1 .xlsemi. 5A 150KHz 36V Buck DC/DC Converter With Constant Current Loop Pin Configurations TO263-5L 5 4 3 2 1 VIN CS SW FB GND Metal Tab SW Figure2. Pin Configuration of XL4501 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5 Pin Name GND FB SW CS VIN Description...