Datasheet > G5723B

G5723B

更新时间： 2024-11-16 17:01:27

品牌	Logo	应用领域
致新 - GMT		/
页数	文件大小	规格书
1页	57K
描述
EN1, AGND, FB1, AGND, EN2, IN2, OUT2, IN1, PGND, LX

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G5723B 数据手册

G5723B

Global Mixed-mode Technology

1.4MHz 1A Synchronous Buck Converter with

600mA LDO Regulator

Features

Applications

Digital Still and Video Cameras

MP3 Players

Buck Converter

High Efficiency: Up to 93%

Portable Instruments

Low Quiescent Current: Only 50µA During Op-

eration

Internal Soft Start Function

1A Output Current

2.5V to 6V Input Voltage Range

1.4MHz Switching Frequency

No Schottky Diode Required

100% Duty Cycle in Dropout Operation

0.6V Reference Allows Low Output Voltages

<1µA Shutdown Current

General Description

The G5723B consists of a synchronous step-down

DC/DC converter and a LDO regulator. The DC/DC

converter is operated on current mode architecture.

Switching frequency is set at 1.4MHz allowing the use

of small surface mount inductor and capacitor. The

internal synchronous switches increase efficiency and

eliminate the need for external Schottky diode.

Current Mode Operation for Excellent Line and

Load Transient Response

LDO Regulator

Dropout voltage typically 0.65V @ I_O= 600mA

Output current in excess of 600mA

Output voltage accuracy ±2%

Quiescent current, typically 0.3mA

Internal short circuit current limit

Internal over temperature protection

Ordering Information

ORDER

NUMBER

TEMP.

RANGE

PACKAGE

(Green)

MARKING

VOLTAGE

G5723B-33F11U

G5723B-33F61U

G5723B-33

3.3V

-40°C to +85°C

SOP-8 (FD)

MSOP-10 (FD)

Note:F1: SOP-8 (FD)

1: Bonding Code

U: Tape & Reel

F6: MSOP-10 (FD)

Pin Configuration

Typical Application Circuit

G5723B

2.2µH

V_OUT1

1.2V

C_OUT1

10µF

V_IN

IN1

G5723B

_FB* (option)

C_IN1

2.2µF

EN1

AGND

FB1

EN1

AGND

FB1

9. PGND

PGND

IN1

18K

IN1

Thermal

Pad

18K

Thermal

Pad

IN2

OUT2

IN2

OUT2

AGND

C_IN2

1µF

AGND

V_OUT2

IN2

OUT2

AGND PGND

C_OUT2

4.7µF

MSOP-10 (FD)

SOP-8 (FD)

Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.

V_OUT1= 0.6V × (1+

)

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 0.1

Aug 23, 2012

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