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PDF ( 数据手册 , 数据表 ) G524A

零件编号 G524A
描述 Power Distribution Switch
制造商 Global Mixed-mode Technology
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G524A 数据手册, 描述, 功能
Global Mixed-mode Technology
G524A/B/C/D
Power Distribution Switch
Features
„ 70mΩ High-Side MOSFET
(G524A,G524B,G524C,G524D)
„ Available with 4 Versions of Current Limits with
Foldback
„ Operating Range:2.7V to 5.5V
„ 1mS Typical Rise Time
„ Fast Overcurrent Response -1.5µs (TYPICAL)
„ Under voltage Lockout
„ 130µA 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 )
„ Available with or without Output Shutdown
Pull-low Resister
„ Output Reverse-Voltage Protection
„ SOT-23-5, TSOT-23-6, MSOP-8 and MSOP-8 (FD)
Packages
„ UL Certification_#E232223
„ CB Test Certification by IEC 60950-1:2005 (2nd
Edition); Am 1:2009
General Description
The G524 is an integrated power switch for
self-powered and bus-powered Universal Serial Bus
(USB) applications. G524A, G524B, G524C, G524D
are 70mΩ RDS(ON).
Several Protection features include current limiting and
thermal shutdown to prevent catastrophic switch fail-
ure caused by increasing power dissipation when con-
tinuous 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 pow-
ered off. When the output voltage is higher than input
voltage, the power switch is turned off by internal out-
put reverse-voltage comparator.
OC is an open-drain output report over-current or
over-temperature event and has typical 9ms deglitch
timeout period. In addition, OC also reports output
reverse-voltage condition with typical 5ms deglitch
timeout period.
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
Pin Configuration
Typical Application Circuit
OUT 1
G524
5 IN EN (EN) 1
G524
6 OC
GND 2
GND 2
5 OUT
OC 3
4 EN (EN) IN 3
4 OUT
GND 1
SOT-23-5
G524
8 OUT GND 1
TSOT-23-6
G524
8 OUT
IN 2
IN 3
7 OUT
6 OUT*
IN 2
IN 3
Thermal
Pad
7 OUT
6 OUT*
EN (EN) 4
5 OC EN (EN) 4
5 OC
MSOP-8
MSOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the GND for excellent power dissipation.
*Pin#6 should be considered as OUT when circuit design and PCB layout, but it is NC pin actually.
Ver: 0.6
Jun 13, 2013
1
Power Supply
2.7V to 5.5V
G524
1µF*
IN
OC
OUT
ON EN(EN)
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












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