XL4013

Datasheet 4A 180KHz 36V Buck DC to DC Converter Features n n n n n n n n n n n n n Wide 8V to 36V Input Voltage Range Output Adjustable from 1.25V to 32V Maximum Duty Cycle 100% Minimum Drop Out 0.3V Fixed 180KHz Switching Frequency 4A Constant Output Current Capability Internal Optimize Power MOSFET High efficiency Excellent line and load regulation Built in thermal shutdown function Built in current limit function Built in output short protection function Available in TO-252 package XL4013 General Description The XL4013 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 4A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An over current protection function is built inside. When short protection function happens, the operation frequency will be reduced from 180KHz to 48KHz. An internal compensation block is built in to minimize external component count. Applications n n n LCD Monitor and LCD TV Portable instrument power supply Telecom / Networking Equipment Figure1. Package Type of XL4013 Rev 1.3 1 www.xlsemi.com Datasheet 4A 180KHz 36V Buck DC to DC Converter Pin Configurations XL4013 Figure2. Pin Configuration of XL4013 (Top View) Table 1 Pin Description Pin Numbe...