XL2011规格书(官方版).pdf

5V/2.1A 150KHz 45V Buck DC to DC Converter For USB Interface XL2011 Features General Description n Wide 8V to 45V input voltage range. The XL2011 is a 150 KHz fixed frequency n Fixed 5V output voltage. PWM buck (step-down) DC/DC converter, n Maximum 2.1A output current. capable of driving a 2.1A load with high n Fixed 150KHz switching frequency. efficiency, low ripple and excellent line and n Internal optimize power MOSFET. load regulation. Requiring a minimum n High efficiency up to 92%. number of external components, the regulator n Built in output short shutdown function. is simple to use and include internal n Excellent line and load regulation. frequency compensation and a n Built in thermal shutdown function. fixed-frequency oscillator. n Built in current limit function. n Available in SOIC-8 package. The XL2011 built in output short protection function. When short protection function happens, the chip will be shutdown. An internal compensation block is built in to minimize external component count. Applications n Car Charger. n Battery Charger. n USB Power Supply. Figure1. Package Type of XL20 11 Rev 1.0 1 5V/2.1A 150KHz 45V Buck DC to DC Converter For USB Interface XL2011 Pin Configurations