G527 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Current Limited Load Switch

Global Mixed-mode Technology
Current Limited Load Switch
G527
Features
„ Input Voltage Range: 2.7V to 5.5V
„ Programmable Over-Current Threshold
„ 70mΩ Typical RDS(ON) at V_IN=5V
„ Only 2.5V Needed for ON/OFF Control
„ Under-Voltage Lockout
„ Thermal Shutdown
„ No Reverse Leakage Current
„ Open-drain Fault Flag Pin
„ Available with or without output shutdown
pull-low resister
„ 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
„ Hot Swap Supplies
„ Notebook Computers
„ Peripheral Ports
„ Personal Communication Devices
General Description
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.
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.
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.
The G527 is available in SOT-23-6, TSOT-23-6,
MSOP-8 and MSOP-8 (FD) packages.
Pin Configuration
Typical Application Circuit
OUT 1
G527
6 IN
GND 2
5 SET
FLAG 3
4 EN(EN)
SOT-23-6/TSOT-23-6
IN 1
IN 2
EN(EN) ³
GND 4
G527
MSOP-8
G527
IN 1
8 OUT
IN 2
EN(EN) ³
Thermal
Pad
7 OUT
6 FLAG
GND 4
5 SET
MSOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the GND for excellent power dissipation.
8 OUT
7 OUT
6 FLAG
5 SET
Power Supply
2.7V to 5.5V
G527
IN
1µF^*
FLAG
EN(EN)
ON
OUT
0.1µF
RSET
SET
OFF
Load
22µF
*: 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.
Ver: 0.4
Nov 14, 2013
TEL: [phone]
http://www.gmt.com.tw
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