G548S Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Power Distribution Switch

Global Mixed-mode Technology
Power Distribution Switch
G548S
Features
„ 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
Output ( OC )
„ 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.
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
G548S1P11U
Note:P1: SOP-8
1: Bonding Code
U: Tape & Reel
G548S1
Pin Configuration
ENABLE
Active High
Current
Limit
1.5A
Output
MOS
R_DS(ON)
70mΩ
TEMP.
RANGE
-40^oC to +85^oC
PACKAGE
(Green)
SOP-8
Typical Application Circuit
GND ¹
G548S
8 OUT
IN 2
IN 3
7 OUT
6 OUT*
EN 4
5 _OC
SOP-8
*Pin#6 should be considered as OUT when circuit
design and PCB layout, but it is NC pin actually.
Power Supply
2.7V to 5.5V
G548S
IN
1µF^*
OC
OUT
EN
ON
OFF
0.1µF
Load
22µF
*: 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.
Ver: 0.1
Mar 27, 2013
TEL: [phone]
http://www.gmt.com.tw
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