G5243A Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – High-Side Power Distribution Switch

Global Mixed-mode Technology Inc.
G5243A
High-Side Power Distribution Switch
Features
„ 120mΩ High-Side MOSFET
„ 2A of Current Limits with Foldback
„ Operating Range:2.7V to 5.5V
„ 1.9ms Typical V_OUT Turn-On Rise Time
„ Under voltage Lockout
„ 65µA Quiescent Supply Current
„ 1µA Maximum Standby Supply Current
„ Active-High Enable Pin
„ No Reverse Current when Power Off
„ Shutdown Discharge Function at OUT Pin
„ SOT-23-5 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 G5243A is an integrated 120mΩ 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. G5243A has shutdown
discharge function when power switch is off. The typi-
cal pull low resistor is 75Ω.
Its low quiescent supply current and small package
(SOT-23-5) is particularly suitable in battery-powered
equipment, like PDA, mobile phone.
Ordering Information
ORDER
NUMBER
G5243AT11U
Note: T1: SOT-23-5
1: Bonding Code
U: Tape & Reel
MARKING
523Ax
Pin Configuration
SHUTDOWN
PULL LOW
RESISTOR
75Ω
TEMP.
RANGE
-40°C to +85°C
PACKAGE
(Green)
SOT-23-5
Typical Application Circuit
OUT 1
G5243A
5 IN
GND 2
EN 3
SOT-23-5
4 IN
G5243A
V IN
IN
OUT
CIN
1 µF
EN
ON
OFF
GND
V OUT
COUT
4 .7 µF
Ver 1.0
Dec 22, 2008
TEL: [phone]
http://www.gmt.com.tw
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