Global Mixed-mode Technology
G527
Current Limited Load Switch
Features
General Description
Input Voltage Range: 2.7V to 5.5V
Programmable Over-Current Threshold
70mΩ Typical RDS(ON) at VIN=5V
Only 2.5V Needed for ON/OFF Control
Under-Voltage Lockout
The G527 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.
Thermal Shutdown
No Reverse Leakage Current
Open-drain Fault Flag Pin
Available with or without output shutdown
pull-low resister
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 G527
is also protected from thermal overload which limits
power dissipation and junction temperatures. Cur-
rent limit threshold is programmed with a resistor
from SET to ground. When the output voltage is
higher than input voltage, the power switch is
turned off by internal output reverse-voltage com-
parator.
Output Reverse-Voltage Protection
SOT-23-6, 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
Applications
An open-drain flag output is also available to indi-
cate fault condition, including overcurrent, thermal
shutdown, and output reverse-voltage condition. In
shutdown mode, the supply current decreases to
less than 1µA. The reverse leakage current is also
less than 1µA.
Hot Swap Supplies
Notebook Computers
Peripheral Ports
Personal Communication Devices
The G527 is available in SOT-23-6, TSOT-23-6,
MSOP-8 and MSOP-8 (FD) packages.
Pin Configuration
Typical Application Circuit
G527
G527
OUT
1
2
3
6
5
4
8
7
6
5
IN
IN
IN
1
2
3
4
OUT
OUT
FLAG
SET
G527
Power Supply
2.7V to 5.5V
SET
GND
IN
OUT
SET
Load
EN(EN)
GND
*
1µF
22µF
0.1µF
RSET
FLAG
EN(EN)
FLAG
SOT-23-6/TSOT-23-6
MSOP-8
EN(EN)
ON
OFF
G527
8
IN
IN
1
2
3
4
OUT
7
6
5
OUT
FLAG
SET
Thermal
Pad
EN(EN)
GND
*: 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.
MSOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the GND for excellent power dissipation.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.4
Nov 14, 2013
1
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