Datasheet > G546

G546

更新时间： 2024-11-15 01:24:55

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描述
Dual Power Distribution Switch

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数据手册

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G546 数据手册

Global Mixed-mode Technology

G546

Dual Power Distribution Switch

Features

General Description

87mΩ R_DS(ON)(G546X1, G546X2) and 72mΩ

_DS(ON)(G546X3, G546X4)

The G546 are integrated dual channel 87mΩ (G546X1,

G546X2) and 72mΩ (G546X3, G546X4) power

switchs for self-powered and bus-powered Universal

Serial Bus (USB) applications.

Available with 5 Versions of Current Limits with

Foldback

Operating Range:2.7V to 5.5V

400µS Typical Rise Time

Under voltage Lockout

65µA Quiescent Supply Current

1µA Maximum Shutdown Supply Current

Logic Level Enable Pin, Available with

Active-High or Active-Low Version

No Reverse Current when Power Off

Deglitched Open-Drain Over-Current Flag

Several Protection features include current limiting

with foldback, and thermal shutdown to prevent catas-

trophic switch failure caused by increasing power dis-

sipation when continuous heavy loads or short circuit

occurs. And a built-in charge pump is used to drive the

N-channel MOSFET that is free of parasitic body diode

to eliminate any reversed current flow across the

switch when it is powered off.

Output ( OC )

SOP-8 Package,MSOP-8 , MSOP-8 (FD) and

TDFN3X3-8 Package

OC is open-drain output report over-current or

over-temperature event and has typical 9ms deglitch

timeout period.

UL Approved_#E232223

Nemko IEC 60950-1 CB/CCA_scheme Certifi-

cation Report #67291

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

Pin Configuration

Typical Application Circuit

G546

GND

OC1

OUT1

G546

Power Supply

2.7V to 5.5V

OUT2

OC2

EN1(EN1)

EN2 (EN2)

OUT1

Load

22µF

OC1

SOP-8/MSOP-8

EN1 (EN1)

OC2

OUT2

G546

EN2 (EN2)

GND

OC1

GND

OC1

OUT1

OUT2

OC2

*: 22µFx2ea of input capacitor is to prevent input voltage drop at output short.

OUT1

OUT2

OC2

EN1(EN1)

EN2 (EN2)

Thermal

Pad

Thermal

Pad

If the PCB trace of power rail to IN is long, larger input capacitor is necessary.

EN1(EN1)

EN2 (EN2)

MSOP-8 (FD)

TDFN3X3-8

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

UL Recognized Component

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver 2.6

Nov 06, 2013

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