The SGM2581 is an integrated 100mΩ (TYP) power switch for self-powered and bus-powered universal series bus (USB) applications.
The SGM2581 is internally current limited and has thermal shutdown that protects device and load from over-current damage. 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℃.
This device employs soft-start circuit that minimizes inrush current in applications where highly capacitive loads are employed.
An open drain nFAULT flag asserts low during over- current and thermal conditions after a 13ms blanking time to prevent false reporting.
SGM2581 is available in a Green SOT-23-5 package. It is rated over the -40℃ to +85℃ temperature range.
100mΩ (TYP) High-side N-Channel MOSFET
Three Current Limit Levels
SGM2581E/F/K: 2600 ± 310mA
Input Voltage Range: 2.5V to 5.5V
Quiescent Current: 23μA (TYP)
Shutdown Current: 0.1μA (TYP)
Soft-Start Function
Thermal Shutdown Protection
Under-Voltage Lockout Protection for VIN
No Reversed Leakage Current (Reverse Blocking)
Fault Flag (nFAULT) with 13ms Filter Eliminates False Assertions
Automatic Output Discharge in Shutdown Mode (SGM2581A/B/C/D/E/F)
500kΩ Pull-Down Resistor at EN Pin (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
General Purpose Power Switching
USB Bus/Self-Powered Hubs/ Peripherals
ACPI Power Distribution
Smart Phone & LCD TV
