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GMB51001 Schematic ( PDF Datasheet ) - Global Mixed-mode

Teilenummer GMB51001
Beschreibung Power Distribution Switch
Hersteller Global Mixed-mode
Logo Global Mixed-mode Logo 




Gesamt 11 Seiten
GMB51001 Datasheet, Funktion
Global Mixed-mode Technology Inc.
GMB51001
Power Distribution Switch
Features
„ 90mΩ 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
„ 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 )
„ With Output Shutdown Pull-low Resister
„ SOP-8 Packages
„ UL Approved_#E232223
„ Nemko IEC 60950-1 CB/CCA_scheme certifica-
tion 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 GMB51001 is an integrated 90mΩ pow er sw itch
for self-powered and bus-powered Universal Serial Bus
(USB) applications.
Several Protection features include current limiting w ith
foldback, and thermal shutdown to prevent catastrophic
switch failure caused by increasing pow er dissipation
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
Ty
GND 1
GMB51001
8 OUT
IN 2
IN 3
7 OUT
6 OUT*
EN (EN) 4
5 OC
SOP-8
*Pin#6 should be considered as OUT when circuit design
and PCB layout, but it is NC pin actually.
R
UL Recognized Component
Ver: 1.0
Jul 06, 2009
pical Application Circuit
Power Supply
2.7V to 5.5V
GMB51001
1µF*
IN
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.
TEL: 886-3-5788833
http://www.gmt.com.tw
1
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GMB51001 Datasheet, Funktion
Global Mixed-mode Technology Inc.
Typical Performance Characteristics (continued)
GMB51001
Turn on Delay Time and Rise Time
Turn off Delay Time and Fall Time
Inrush Current With Different Load Capacitance
Thermal Shutdown Response
UVLO Protection at Rising
UVLO Protection at Falling
Ver: 1.0
Jul 06, 2009
TEL: 886-3-5788833
http://www.gmt.com.tw
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