Datasheet > RT8077

RT8077

更新时间： 2024-11-13 17:01:43

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	216K
描述
2A, 2MHz, Synchronous Step-Down Converter

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RT8077 数据手册

RT8077

2A, 2MHz, Synchronous Step-Down Converter

General Description

Features

^zHigh Efficiency : Up to 95%

The RT8077 is a high efficiency synchronous, step-down

DC/DC converter. Its input voltage range is from 2.6V to

5.5V and provides an adjustable regulated output voltage

from 0.8V to 5V, while delivering up to 2Aof output current.

^zLow R_DS(ON)Internal Switches : 90mΩ

^zProgrammable Frequency : 300kHz to 2MHz

^zNo Schottky Diode Required

^z0.8V Reference Allows for Low Output Voltage

^zLow Dropout Operation : 100% Duty Cycle

^z2.6V to 5.5V Input Voltage Range

^zV_OUTRange from 0.8V to 5V

The internal synchronous low on-resistance power

switches increase efficiency and eliminate the need for

an external Schottky diode. The switching frequency is

set by an external resistor or can be synchronized to an

external clock. The 100% duty cycle provides low dropout

operation extending battery life in portable systems.

^zUp to 2A Output Current

^zThermal Shutdown

^zRoHS Compliant and Halogen Free

Current mode operation with external compensation

allows the transient response to be optimized over a wide

range of loads and output capacitors.

Applications

z Portable Instruments

z Battery-Powered Equipment

z Notebook Computers

z Distributed Power Systems

z IP Phones

The 100% duty cycle in Low Dropout Operation further

maximize battery life.

The RT8077 is available in the WDFN-8L 2x2 package.

z Digital Cameras

z Dynamic Supply Bias for GSM/EDGE PAs and 3G/4G

PAs

Simplified Application Circuit

COMP

PVDD

COMP

RT8077

OSC

PGND

OUT

GND

OUT

is a registered trademark of Richtek Technology Corporation.

DS8077-01 September 2013

www.richtek.com

12 3 4 5 6 7...15

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