XL2576

Datasheet 3A 52KHz 40V Buck DC to DC Converter XL2576 Features  Wide 4.5V to 40V Input Voltage Range  5V,12V and adjustable versions  Output Adjustable from 1.23V to 37V  Maximum Duty Cycle 100%  Minimum Drop Out 1.5V  Fixed 52KHz Switching Frequency  3A Constant Output Current Capability  Internal Optimize Power Transistor  High efficiency  Excellent line and load regulation  TTL shutdown capability  EN pin with hysteresis function  Built in thermal shutdown function  Built in current limit function  Available in TO220-5L or TO263-5L packages General Description The XL2576 is a 52 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A 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 enable function, an over current protection function is built inside. An internal compensation block is built in to minimize external component count. Applications  LCD Monitor and LCD TV  Digital Photo Frame  Set-up Box  ADSL Modem  Telecom / Networking Equipment Rev 2.7 TO220-5L TO263-5L Figure1. Package Type of XL2576 1 www.xlsemi.com 3A 52KHz 40V Buck DC to DC Converter Pin Configurations Datasheet XL2576 TO220-5L Metal Tab GND TO263-5L 5 EN 5 4 FB 4 3 GN...