G546 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Dual Power Distribution Switch

Global Mixed-mode Technology
Dual Power Distribution Switch
G546
Features
„ 87mΩ R_DS(ON) (G546X1, G546X2) and 72mΩ
R_DS(ON) (G546X3, G546X4)
„ Available with 5 Versions of Current Limits 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,MSOP-8 , MSOP-8 (FD) and
TDFN3X3-8 Package
„ UL Approved_#E232223
„ Nemko IEC 60950-1 CB/CCA_scheme Certifi-
cation Report #67291
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 G546 are integrated dual channel 87mΩ (G546X1,
G546X2) and 72mΩ (G546X3, G546X4) power
switchs 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
Typical Application Circuit
GND 1
G546
8 OC1
GND 1
IN 2
EN1(EN1) 3
IN 2
7 OUT1
EN1(EN1) 3
6 OUT2
EN2 (EN2) 4
5 OC2
SOP-8/MSOP-8
G546
Thermal
Pad
8 OC1
7 OUT1
6 OUT2
GND 1
IN 2
EN1(EN1) 3
G546
Thermal
Pad
Power Supply
2.7V to 5.5V
22µF^*
G546
IN
OUT1
22µF*
OC1
Load
22µF
8 OC1
7 OUT1
6 OUT2
EN1 (EN1)
OC2
OUT2
EN2 (EN2)
Load
22µF
*: 22µFx2ea of input capacitor is to prevent input voltage drop at output short.
If the PCB trace of power rail to IN is long, larger input capacitor is necessary.
EN2 (EN2) 4
5 _OC2 ^{EN2 (EN2) 4}
5 OC2
MSOP-8 (FD)
TDFN3X3-8
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
R
UL Recognized Component
Ver 2.6
Nov 06, 2013
TEL: [phone]
http://www.gmt.com.tw
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