GMT G5244A31U, G5244T11U Schematic [ru]
Global Mixed-mode Technology
G5244
High-Side Power Distribution Switch
Features
120mΩΩΩΩ High-Side MOSFET
2.5A of Current Limits with Foldback
Operating Range:2.7V to 5.5V
1.9ms Typical V
Under voltage Lockout
65µA Quiescent Supply Current
1µA Maximum Standby Supply Current
Active-High Enable Pin
No Reverse Current when Power Off
Shutdown Discharge Function at DSG Pin
SOT-23-5 and ADFN1.5X1.5-6 Package Available
Turn-On Rise Time
OUT
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
General Description
The G5244 is an 120mΩ power switch for
self-powered and bus-powered Universal Serial Bus
(USB) applications.
Several Protection features such as current limiting
with foldback, and thermal shutdown are included to
prevent catastrophic switch failure caused by increasing power dissipation when continuous heavy loads or
short circuit occurs. A built-in charge pump is used to
drive the N-channel MOSFET that makes it free of
parasitic body diode to eliminate any reversed current
flow across the switch when it is powered off. The
G5244 has a shutdown discharge function when
power switch is turned off. User could realize the shutdown discharge function by adding an external resistor
between OUT PIN and DSG PIN.
Its low quiescent supply current and small package
SOT-23-5 and ADFN1.5X1.5-6 is particularly suitable
in battery-powered equipment, like PDA, mobile phone.
ORDER
NUMBER
MARKING
TEMP.
RANGE
G5244T11U 5244x -40°C to +85°C SOT-23-5
G5244A31U
54
xx
-40°C to +85°C ADFN1.5X1.5-6
Note: T1: SOT-23-5 A3: ADFN1.5X1.5-6
1: Bonding Code
U: Tape & Reel
Pin Configuration Typical Application Circuit
OUT
OUT
GND
GND
EN
EN
G5244
1
1
2
2
3
3
G5244
SOT-23-5
SOT-23-5
5
5
IN
IN
DSG
DSG
4
4
DSG
DSG
G5244
G5244
1
1
IN
IN
NC
NC
2
2
3
3
ADFN1.5X1.5-6
ADFN1.5X1.5-6
V
V
IN
IN
OUT
OUT
6
6
GND
GND
5
5
C
C
IN
EN
EN
4
4
1µF
1µF
IN
OFF
OFF
ON
ON
IN
IN
EN
EN
G5244
G5244
GND
GND
PACKAGE
(Green)
DSG
DSG
OUT
OUT
Shutdown
Shutdown
Discharge
Discharge
Resistor
Resistor
V
V
OUT
OUT
C
C
OUT
OUT
4.7µF
4.7µF
Ver 0.4
Oct 05, 2011
1
TEL: 886-3-5788833
http://www.gmt.com.tw
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