CX8517

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop Features n n n n CX8517 General Description The CX8517 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3.5A 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. Wide 8V to 36V Input Voltage Range Output Adjustable from 1.25V to 32V Maximum Duty Cycle 100% Minimum Drop Out 0.3V n n n n n Fixed 180KHz Switching Frequency Maximum 3.5A Switching Current Internal Optimize Power MOSFET High efficiency Excellent line and load regulation n n n n n With output constant current loop Built in thermal shutdown function Built in current limit function Built in output short protection function SOP8-EP package Applications n n n n n Car Charger Battery Charger LCD Monitor and LCD TV Portable instrument power supply Telecom / Networking Equipment Figure1. Package Type of CX8517 www.yxwic.com Datasheet 3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop Pin Configurations The Exposed PAD is...