RT8089A中文资料立锜科技数据手册PDF规格书

General Description

The RT8089A is a high efficiency synchronous, step-down DC/DC converter. Its input voltage ranges from 2.7V to 5.5V that provides an adjustable regulated output voltage from 0.6V to VIN while delivering up to 3A of output current. The internal synchronous low On-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The switching frequency is fixed internally at 1MHz. The 100 duty cycle provides low dropout operation, hence extending battery life in portable systems.

特性 Features

● High Efficiency : Up to 95

● High Efficiency at Light Load

● Low RDS(ON) Power Switches : 69mΩ/49mΩ

● Fixed Frequency : 1MHz

● No Schottky Diode Required

● Internal Compensation

● 0.6V Reference Allows Low Output Voltage

● Low Dropout Operation : 100 Duty Cycle

● OCP, UVP, OTP

● RoHS Compliant and Halogen Free

Applications

● Portable Instruments

● Battery Powered Equipment

● Notebook Computers

● Distributed Power Systems

● IP Phones

● Digital Cameras