Datasheet > G5244

G5244

更新时间： 2024-11-08 01:12:11

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描述
High-Side Power Distribution Switch

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G5244 数据手册

G5244

High-Side Power Distribution Switch

Features

General Description

The G5244 is an 120mΩ power switch for

self-powered and bus-powered Universal Serial Bus

(USB) applications.

ꢀ

120mΩ High-Side MOSFET

2.5A of Current Limits with Foldback

Operating Range:2.7V to 5.5V

1.9ms Typical V_OUTTurn-On Rise Time

Under voltage Lockout

65ꢀA Quiescent Supply Current

1ꢀA Maximum Standby Supply Current

Active-High Enable Pin

No Reverse Current when Power Off

Shutdown Discharge Function at DSG Pin

SOT-23-5 and ADFN1.5X1.5-6 Package Available

Several Protection features such as current limiting

with foldback, and thermal shutdown are included to

prevent catastrophic switch failure caused by increas-

ing power dissipation when continuous heavy loads or

short circuit occurs. A built-in charge pump is used to

drive the N-channel MOSFET that makes it free of

parasitic body diode to eliminate any reversed current

flow across the switch when it is powered off. The

G5244 has a shutdown discharge function when

power switch is turned off. User could realize the shut-

down discharge function by adding an external resistor

between OUT PIN and DSG PIN.

Applications

ꢀ

High-Side Power Protection Switch

USB Power Management

USB Host and Self-Powered Bubs

USB Bus-Powered Hubs

Hot Plug-In Power Supplies

Battery-Charger Circuits

Its low quiescent supply current and small package

SOT-23-5 and ADFN1.5X1.5-6 is particularly suitable

in battery-powered equipment, like PDA, mobile phone.

Ordering Information

ORDER

NUMBER

TEMP.

RANGE

PACKAGE

(Green)

MARKING

G5244T11U

5244x

-40°C to +85°C

SOT-23-5

G5244A31U

-40°C to +85°C

ADFN1.5X1.5-6

Note: T1: SOT-23-5 A3: ADFN1.5X1.5-6

1: Bonding Code

U: Tape & Reel

Pin Configuration

Typical Application Circuit

G5244

DSG

OUT

V_IN

OUT

GND

Shutdown

Discharge

Resistor

OUT

GND

V_OUT

GND

OFF

C_IN

1ꢀF

DSG

C_OUT

4.7ꢀF

DSG

ADFN1.5X1.5-6

SOT-23-5

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver 0.4

Oct 05, 2011

中文翻译

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