Datasheet > RT8078A

RT8078A

更新时间： 2024-11-12 12:25:07

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
12页	176K
描述
4A, 1MHz, Synchronous Step-Down Converter

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RT8078A 数据手册

RT8078A

4A, 1MHz, Synchronous Step-Down Converter

General Description

Features

^zHigh Efficiency : Up to 95%

^zFixed Frequency : 1MHz

^zNo Schottky Diode Required

^zInternal Compensation

The RT8078A is a high efficiency synchronous, step-down

DC/DC converter. It's input voltage range from 2.7V to 5.5V

that provides an adjustable regulated output voltage from

0.6V to V_INwhile delivering up to 4A 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. Current mode operation with internal

compensation allows the transient response to be

optimized over a wide range of loads and output capacitors.

The RT8078Ais operated in PWM mode to achieve high

efficiency for a wide load range. The RT8078Ais available

in WDFN-10L 3x3 and SOP-8 (Exposed Pad) packages.

^z0.6V Reference Allows Low Output Voltage

^zPWM Mode Operation

^zLow Dropout Operation : 100% Duty Cycle

^zOCP, UVP, OVP, OTP

^zRoHS Compliant and Halogen Free

Applications

z Portable Instruments

z Battery Powered Equipment

z Notebook Computers

z Distributed Power Systems

z IP Phones

z Digital Cameras

Ordering Information

RT8078A

Package Type

QW : WDFN-10L 3x3 (W-Type)

SP : SOP-8 (Exposed Pad-Option 2)

Pin Configurations

(TOP VIEW)

PVIN

SVIN

Lead Plating System

G : Green (Halogen Free and Pb Free)

Z : ECO (Ecological Element with

Halogen Free and Pb free)

Note :

PGOOD

WDFN-10L 3x3

Richtek products are :

ꢀRoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

PVIN

SVIN

PGOOD

GND

ꢀSuitable for use in SnPb or Pb-free soldering processes.

SOP-8 (Exposed Pad)

DS8078A-01 June 2011

www.richtek.com

12 3 4 5 6 7...12

中文翻译

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