G556 - GMT

G556
Global Mixed-mode Technology Inc.
Dual Power Distribution Switch
Features
General Description
„
The G556 is an integrated dual channel 100mΩ power
switch for self-powered and bus-powered Universal
Serial Bus (USB) applications.
„
100mΩ 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 )
SOP-8 Package
OC is open-drain output report over-current or
over-temperature event and has typical 9ms deglitch
timeout period.
„
„
„
„
„
„
„
„
Several Protection features include current limiting
with foldback, and thermal shutdown to prevent catastrophic switch failure caused by increasing power 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.
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
Ordering Information
ORDER
NUMBER
MARKING
ENABLE
Current Limit
TEMP.
RANGE
PACKAGE
(Green)
G556A1P1U
G556A2P1U
G556B1P1U
G556B2P1U
G556A1
G556A2
G556B1
G556B2
Active High
Active Low
Active High
Active Low
2A
2A
1.5A
1.5A
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
SOP-8
SOP-8
SOP-8
SOP-8
G556C1P1U
G556C2P1U
G556C1
G556C2
Active High
Active Low
1A
1A
-40°C to +85°C
-40°C to +85°C
SOP-8
SOP-8
G556D1P1U
G556D2P1U
G556D1
G556D2
Active High
Active Low
0.75A
0.75A
-40°C to +85°C
-40°C to +85°C
SOP-8
SOP-8
Pin Configuration
Typical Application Circuit
G556
EN1(EN1)
1
8
OUT1
OC1
2
7
IN
OC2
3
6
GND
EN2 (EN2)
4
5
OUT2
Power Supply
2.7V to 5.5V
7
1µF
2
1
3
4
IN
OUT1
8
Load
0.1µF
22µF
OC1
EN1 (EN1)
OC2
EN2 (EN2)
OUT2
5
Load
0.1µF
22µF
SOP-8
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver 1.3
Sep 29, 2010
1