G923-285T1U

更新时间： 2024-11-07 04:19:15

品牌	Logo	应用领域
致新 - GMT		稳压器电源电路
页数	文件大小	规格书
9页	516K
描述
300mA High PSRR LDO Regulators

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G923-285T1U 数据手册

Global Mixed-mode Technology Inc.

G923

300mA High PSRR LDO Regulators

Features

General Description

Low, 90µA No-Load Supply Current

The G923 is a low supply current, high PSRR, and low

dropout linear regulator that comes in a space saving

SOT-23-5 package. The supply current at no-load is

90µA. In the shutdown mode, the maximum supply

current is less than 1µA. Operating voltage range of

the G923 is from 2.50V to 5.50V. The over-current

protection limit is set at 550mA typical. An over- tem-

perature protection circuit is built-in in the G923 to

prevent thermal overload. These power saving fea-

tures make the G923 ideal for use in the bat-

tery-powered applications such as notebook com-

puters, cellular phones, and PDA’s.

Guaranteed 300mA Output Current

Dropout Voltage is 200mV @ 150mA Load

PSRR=65dB @ 120Hz

Over-Temperature Protection and Short-Circuit

Protection

Two Modes of Operation ----

Fixed Mode: 1.50V~5.00V

Adjustable Mode: from 1.25V to 5.50V

Max. Supply Current in Shutdown Mode < 1µA

Low Output Noise at 238µV_RMS

Stable with low cost ceramic capacitors

The G923 has two modes of operation. When the SET

pin is connected to ground, its output is a pre-set value:

1.50V~5.00V. There is no external component needed

to decide the output voltage. When an output other

than the preset value is needed, two external resistors

should be used as a voltage divider. The output volt-

age is then decided by the resistor ratio. The G923

comes in a space saving SOT-23-5 package.

Applications

Notebook Computers

Cellular Phones

PDAs

Digital still Camera and Video Recorders

Hand-Held Devices

Audio Codec

Pin Configuration

Typical Application Circuit

OUTPUT

VOLTAGE

OUT

G923

SHDN

＋

C_OUT

C_IN

_ 1µF

4.7µF

BATTERY

SET

GND

SHDN

SET

Fixed mode

GND

G923

G963

OUTPUT

VOLTAGE

OUT

＋

－

G923

SOT-23-5

SET

C_OUT

C_IN

1µF

SHDN

BATTERY

4.7µF

GND

Adjustable mode

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.5

Jan 16, 2007

12 3 4 5 6 7...9

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