CX8517 Datasheet | CXW

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop Features n n n n 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 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 over current protection function is built inside. When short protection function happens, the operation frequency will be reduced from 180KHz to 48KHz. An internal pensation block is built in to minimize external ponent 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 Tele / Networking Equipment Figure1. Package Type of CX8517 .yxwic. Datasheet 3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop Pin Configurations The Exposed PAD is SW Figure2. Pin Configuration of CX8517 (Top View) Table 1 Pin Description Pin Number 1 2 Pin Name NC SW Description No Connected. Power Switch Output Pin (SW). SW is the switch node that supplies power to the output. (Note: Connected the back exposed PAD to SW.) Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into CX8517. Feedback...