G5461 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Power Distribution Switch

Global Mixed-mode Technology Inc.
Power Distribution Switch
G5461
Features
„ 53mΩ High-Side MOSFET
„ Available with 4 Versions of Current Limits with
Foldback
„ Operating Range:2.7V to 5.5V
„ 400µS Typical Rise Time
„ Under voltage Lockout
„ 90µA 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 , MSOP-8 and TDFN3X3-8 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 G5461 is an integrated 53mΩ 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.
Pin Configuration
G5461
GND ¹
IN 2
8 NC
7 OUT
IN 3
6 OUT
EN (EN) 4
5 _OC
SOP-8/MSOP-8
G5461
GND 1
IN 2
IN 3
EN (EN) 4
Thermal
Pad
8 NC
7 OUT
6 OUT
5 OC
TDFN3X3-8
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
Typical Application Circuit
Power Supply
2.7V to 5.5V
G5461
IN
1µF^*
OC
OUT
EN(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 0.3
Apr 12, 2011
TEL: [phone]
http://www.gmt.com.tw
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