G5244 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – High-Side Power Distribution Switch

Global Mixed-mode Technology
G5244
High-Side Power Distribution Switch
Features
120mΩ High-Side MOSFET
2.5A of Current Limits with Foldback
Operating Range:2.7V to 5.5V
1.9ms Typical V_OUT Turn-On Rise Time
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
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 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 increas-
ing 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 shut-
down 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.
Ordering Information
ORDER
NUMBER
MARKING
G5244T11U
5244x
54
G5244A31U
xx
Note: T1: SOT-23-5 A3: ADFN1.5X1.5-6
1: Bonding Code
U: Tape & Reel
Pin Configuration
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
SOT-23-5
ADFN1.5X1.5-6
Typical Application Circuit
OUT 1
G5244
5 IN
GND 2
EN 3
4 DSG
SOT-23-5
G5244
IN 1
6 OUT
NC 2
DSG 3
5 GND
4 EN
ADFN1.5X1.5-6
G5244
VIN
IN
DSG
EN
ON
GND ^OUT
CIN
1µF
OFF
Shutdown
Discharge
Resistor
VOUT
COUT
4.7µF
Ver 0.4
Oct 05, 2011
TEL: [phone]
http://www.gmt.com.tw
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