SGM2581
Power Distribution Switch
GENERAL DESCRIPTION
FEATURES
The SGM2581 is a single channel power distribution
switch. The switch operates from a wide range of 2.5V
to 5.5V supply voltage, and is controlled by the EN pin.
It can be used in USB power distribution applications.
● Input Voltage Range: 2.5V to 5.5V
● On-Resistance: 100mΩ (TYP)
● Three Current Limit Levels
SGM2581A/B/G: 1100 ± 110mA
SGM2581C/D/I: 2100 ± 220mA
SGM2581E/F/K: 2600 ± 310mA
● Quiescent Current: 23μA (TYP)
● Shutdown Current: 0.1μA (TYP)
● Full Set of Protections
A 100mΩ low RON N-MOSFET is integrated. The small
size and quiescent current make the device very suitable
for space limited, battery-powered applications.
A number of protection features are provided in the
device including soft-start, current limit and thermal
shutdown. Thermal shutdown shuts off the output
MOSFET and asserts the nFAULT output if the die
temperature exceeds +150℃, and the output MOSFET
remains off until the die temperature drops to +130℃.
The nFAULT pin asserts low during fault conditions
after a 13ms blanking time to prevent false reporting.
Soft-Start
Under-Voltage Lockout for VIN
No Reversed Leakage Current
Thermal Shutdown
● Quick Output Discharge: SGM2581A/B/C/D/E/F
● EN Pin Pull-Down Resistor: 500kΩ
(SGM2581G/I/K)
● Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC,
Test Program 1 with CB Report (SGM2581A/C/E)
● Available in a Green SOT-23-5 Package
SGM2581 is available in a Green SOT-23-5 package. It
is rated over the -40℃ to +85℃ temperature range.
APPLICATIONS
Digital TV
Set-Top Box
Motherboard USB Power Switch
USB Device Power Switch
SG Micro Corp
FEBRUARY 2019 – REV. A. 3
www.sg-micro.com