Datasheet > G5725/A

G5725/A

更新时间： 2024-04-09 19:01:24

品牌	Logo	应用领域
致新 - GMT		/
页数	文件大小	规格书
2页	145K
描述
EN, GND, LX, VIN, VFB, SS=2ms

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G5725/A 数据手册

Global Mixed-mode Technology

G5725

1MHz 1A Synchronous Step-Down Regulator

General Description

Features

The G5725 is a high efficiency monolithic synchronous

buck regulator using a constant frequency, current

mode architecture. Supply current during operation is

only 50µA and drops to <1µA in shutdown. The 2.5V

to 6V input voltage range makes the G5725 ideally

suited for single Li-Ion battery-powered applications.

100% duty cycle provides low dropout operation, ex-

tending battery run time in portable systems. Switching

frequency is internally set at 1MHz, allowing the use of

small surface mount inductors and capacitors. The

internal synchronous switch increase efficiency and

eliminates the need for an external Schottky diode.

Built-in soft start function eliminates in-rush current

that could damage the system.

High Efficiency: Up to 93%

Low Quiescent Current: Only 50µA During Op-

eration

Internal Soft Start Function

1A Output Current

2.5V to 6V Input Voltage Range

1MHz Switching Frequency

No Schottky Diode Required

100% Duty Cycle in Dropout Operation

0.6V Reference Allows Low Output Voltages

<1µA Shutdown Current

Current Mode Operation for Excellent Line and

Load Transient Response

Over Temperature Protected

RoHS Compliant

Applications

Cellular Telephones

Personal Information Appliances

Microprocessors and DSP Core Supplies

Wireless and DSL Modems

Digital Still and Video Cameras

MP3 Players

Portable Instruments

Pin Configuration

Typical Application Circuit

G5725

2.2µH

G5725

V_IN

4~6V

V_OUT

VIN

3.3V

300mA

GND

VFB

VIN

_FB* (option)

C_IN

2.2µF

CER

C_OUT

10µF

CER

VFB

82k

GND

18k

SOT-23-5/TSOT-23-5

V_OUT= 0.6V × (1+

)

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.0

May 04, 2012

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