RT9201 - Richtek Technology

RT9201 High Efficiency PWM Step-Down DC-DC Converter

The RT9201 is a high-efficiency pulse-width-modulated (PWM) step-down DC-DC converter. Capable of delivering 600mA output current over a wide input voltage range from 2.5 to 5.5V, the RT9201 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs .

Features

include soft start, 0.8V internal reference voltage with 1% accuracy, over temperature protection, and over current protection. DFN-10L 3x3 EN SS FB NC GND 1 2 3 4 5 Features l l l l l l l l l +2.5V to +5.5V Input Range Adjustable Output From 0.85V to VIN 600mA Output Current 95% Efficiency No Schottky Diode Required 85µA Quiescent Current 100% Duty Cycle in Low-Dropout Mode 800kHz Fixed-Frequency PWM Operation Pulse-skipping Mode Operation During Light Ioad Applications l l l l l l Cellular Telephones Wireless Modems Personal Information Appliances Portable Instruments Distributed Power S.