Ver: 0.1

Mar 27, 2013

TEL: 886-3-5788833

http://www.gmt.com.tw

1

G548S

Global Mixed-mode Technology

Power Distribution Switch

Features

70m

Ω High-Side MOSFET

Operating Range:2.7V to 5.5V

1mS Typical Rise Time

Fast Overcurrent Response 1.5µs (TYP.)

Under voltage Lockout

130µA Quiescent Supply Current

1µA Maximum Shutdown Supply Current

No Reverse Current when Power Off

Deglitched Open-Drain Over-Current Flag

Output (

Output Reverse-Voltage Protection

SOP-8 Packages

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

General Description

The G548S is an integrated power switch for

self-powered and bus-powered Universal Serial Bus

(USB) applications.

Several Protection features include current limiting and

thermal shutdown to prevent catastrophic switch fail-

ure caused by increasing power dissipation when con-

tinuous heavy loads or short circuit occurs. 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 pow-

ered off. When the output voltage is higher than input

voltage, the power switch is turned off by internal out-

put reverse-voltage comparator.

over-temperature event and has typical 9ms deglitch

timeout period. In addition,

reverse-voltage condition with typical 5ms deglitch

timeout period.

Ordering Information

ORDER

NUMBER

MARKING

ENABLE

Current

Limit

Output

MOS

TEMP.

RANGE

PACKAGE

(Green)

G548S1P11U

G548S1

Active High

1.5A

70m

Ω

SOP-8

Note:P1: SO

P-8

1: Bonding Code

U: Tape & Reel

Pin Configuration

Typical Application Circuit

0.1µF

22µF

Load

OC

EN

1µF

Power Supply

2.7V to 5.5V

OUT

IN

ON

OFF

*

*: 1µF of input capacitor is enough in most application cases.

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

G548S

*Pin#6 should be considered as OUT when circuit

design and PCB layout, but it is NC pin actually.

8

6

5

1

2

3

4

GND

SOP-8

G548S

7

OUT

EN

OUT

OC

IN

IN

OUT

*

0.1µF

22µF

Load

OC

EN

1µF

Power Supply

2.7V to 5.5V

OUT

IN

ON

OFF

*

*: 1µF of input capacitor is enough in most application cases.

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

G548S

*Pin#6 should be considered as OUT when circuit

design and PCB layout, but it is NC pin actually.

8

6

5

1

2

3

4

GND

SOP-8

G548S

7

OUT

EN

OUT

OC

IN

IN

OUT

*