General Description

The RT9201 is a high-efficiency pulse-width-modulated (PWM) step-downDC-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 and handy-terminals.

Features

+2.5V to +5.5V Input Range

Adjustable Output From 0.85V to VIN

600mA Output Current

95%Efficiency

No Schottky Diode Required

85mA Quiescent Current

100% Duty Cycle in Low-Dropout Mode

800kHz Fixed-Frequency PWM Operation

Pulse-skipping Mode Operation During Light Ioad

RoHS Compliant and 100% Lead (Pb)-Free

Applications

Cellular Telephones

Wireless Modems

Personal InformationAppliances

Portable Instruments

Distributed Power Systems

Battery-Powered Equipment (1 Li-Ion or 3NiMH/NiCd)