The RT2657 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
2.7V to 5.5V. The RT2657 is ideally suited for portable
electronic devices that are powered from 1-cell Li-ion
battery or from other power sources such as cellular
phones, PDAs, hand-held devices, game console and
related accessories.资料下载