G5254 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Current Limited Load Switch

Global Mixed-mode Technology
Current Limited Load Switch
G5254
Features
„ Input Voltage Range: 2.7V to 5.5V
„ Programmable Over-Current Threshold
„ 90mΩ Typical RDS(ON) at V_IN=5V
„ Only 2.5V Needed for ON/OFF Control
„ Under-Voltage Lockout
„ Thermal Shutdown
„ No Reverse Leakage Current
„ 5-Pin SOT-23 Package
Applications
„ Hot Swap Supplies
„ Notebook Computers
„ Peripheral Ports
„ Personal Communication Devices
General Description
The G5254 is a current limited N-channel MOSFET
power switch designed for highside load switching
applications. The low RDS(ON) N-channel power
MOSFET is driven by a built-in charge pump which
generates a voltage higher than the supply voltage to
fully enhance the switch.
This switch operates with inputs ranging from 2.7V
to 5.5V, making it ideal for both 3.3V and 5V sys-
tems. An integrated current-limiting circuit protects
the input supply against large current which may
cause the supply to fall out of regulation. The
G5254 is also protected from thermal overload
which limits power dissipation and junction tem-
peratures. Current limit threshold is programmed
with a resistor from SET to ground. In shutdown
mode, the supply current decreases to less than
1µA. The reverse leakage current is also less than
1µA.
The G5254 is available in a SOT-23-5 package
Ordering Information
ORDER
NUMBER
G5254LT11U
G5254HT11U
Note:T1: SOT-23-5
1: Bonding Code
U : Tape & Reel
MARKING
E254Lx
E254Hx
Pin Configuration
ENABLE
Active Low
Active High
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
SOT-23-5
SOT-23-5
Typical Application Circuit
OUT 1
G5254
5 IN
GND 2
SET 3
SOT-23-5
4 ON (ON)
INPUT
ON (ON)
1µF
GND
G5254
IN
OUT
ON/(ON)
GND
SET
RSET
OUTPUT
0.47µF
GND
Ver: 0.4
Jul 26, 2012
TEL: [phone]
http://www.gmt.com.tw
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