GRM31CR71A475KA01中文资料立锜科技数据手册PDF规格书

General Description

The RT8057 is a high efficiency Pulse-Width-Modulated (PWM) step-down DC/DC converter, capable of delivering 1A output current over a wide input voltage range from 2.7V to 5.5V. The RT8057 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.

特性 Features

2.7V to 5.5V Wide Input Operation Range

2.25MHz Fixed-Frequency PWM Operation

Up to 1A Output Current

Up to 90 Efficiency

0.6V Reference Allows Low Output Voltage

Internal Soft-Start

No Schottky Diode Required

Internal Compensation to Reduce External Components

Low Dropout Operation : 100 Duty Cycle

RoHS Compliant and Halogen Free

Applications

Portable Instruments

Game Console and Accessories

Microprocessors and DSP Core Supplies

Cellular Phones

Wireless and DSL Modems

PC Cards