GMT G548S Power distribution switch Datasheet

G548S
Global Mixed-mode Technology
Power Distribution Switch
Features
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General Description
70mΩ 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
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 failure caused by increasing power dissipation when continuous 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 powered off. When the output voltage is higher than input
voltage, the power switch is turned off by internal output reverse-voltage comparator.
Output ( OC )
Output Reverse-Voltage Protection
„ SOP-8 Packages
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Applications
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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
OC is open-drain output report over-current or
over-temperature event and has typical 9ms deglitch
timeout period. In addition, OC also reports output
reverse-voltage condition with typical 5ms deglitch
timeout period.
Ordering Information
ORDER
NUMBER
MARKING
ENABLE
Current
Limit
Output
MOS
RDS(ON)
TEMP.
RANGE
PACKAGE
(Green)
G548S1
Active High
1.5A
70mΩ
-40oC to +85oC
SOP-8
G548S1P11U
Note:P1: SOP-8
1: Bonding Code
U: Tape & Reel
Pin Configuration
Typical Application Circuit
G548S
G548S
GND
1
8
OUT
IN
2
7
OUT
IN
3
6
OUT*
EN
4
5
OC
Power Supply
2.7V to 5.5V
1µF*
OUT
Load
0.1µF
22µF
OC
ON
EN
OFF
SOP-8
*Pin#6 should be considered as OUT when circuit
design and PCB layout, but it is NC pin actually.
IN
*: 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.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.1
Mar 27, 2013
1
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