G543 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Power Distribution Switch

Global Mixed-mode Technology
Power Distribution Switch
G543
Features
„ 70mΩ High-Side MOSFET
„ Internal Current Limit to 3.3A (TYP)
„ Operating Range:2.7V to 5.5V
„ 1mS Typical Rise Time
„ Fast Overcurrent Response:3µS (TYPICAL)
„ Under voltage Lockout
„ 100µA 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 )
„ MSOP-8 Package
Applications
„ High-Side Power Protection Switch
„ USB Power Management
„ Hot Plug-In Power Supplies
„ Battery-Charger Circuits
General Description
The G543 is an integrated power switch for
self-powered. The G543 has a typical R_DS(ON) of
70mohm.
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. 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
MARKING ENABLE
G543A1P81U
G543A1
G543A2P81U
G543A2
Note: P8: MSOP-8
1: Bonding Code
U: Tape & Reel
Active High
Active Low
Current
Limit
3.3A
3.3A
Output
MOS
R_DS(ON)
70mhom
70mhom
Output
Shutdown
Resistor
No
No
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
MSOP-8
MSOP-8
Pin Configuration
Typical Application Circuit
GND 1
IN 2
IN 3
EN (EN) 4
G543
MSOP-8
8 OUT
7 OUT
6 NC
5 OC
Power Supply
2.7V to 5.5V
G543
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: 0.2
Mar 13, 2012
TEL: [phone]
http://www.gmt.com.tw
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