G554 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Dual Power Distribution Switch

Global Mixed-mode Technology Inc.
Dual Power Distribution Switch
G554
Features
„ 118mΩ High-Side MOSFET
„ 450mA Typical Current Limit 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
Output ( OC )
„ SOP-8 Package
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 G554 is an integrated dual channel 118mΩ power
switch for self-powered and bus-powered Universal
Serial Bus (USB) applications.
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.
OC is open-drain output report over-current or
over-temperature event and has typical 9ms deglitch
timeout period.
Ordering Information
ORDER
NUMBER
G554D1P11U
G554D2P11U
Note: P1: SOP-8
1: Bonding Code
U: Tape & Reel
MARKING
G554D1
G554D2
ENABLE
Active High
Active Low
Current Limit
0.45A
0.45A
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Pb free)
SOP-8
SOP-8
Pin Configuration
Typical Application Circuit
GND ¹
IN 2
EN1(EN1) ³
EN2 (EN2) 4
G554
SOP-8
8 _OC1
7 OUT1
6 OUT2
5 OC2
Power Supply
2.7V to 5.5V
IN
OUT1
1µF
OC1
EN1 (EN1)
OC2
OUT2
EN2 (EN2)
0.1µF
Load
22µF
0.1µF
Load
22µF
Ver 0.2
Jan 11, 2008
TEL: [phone]
http://www.gmt.com.tw
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