GENERAL DEscriptION
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.
PIN CONFIGURATIONS
FEATURES
Input Voltage Range: 2.5V to 5.5V
On-Resistance: 100mΩ (TYP)
Current Limit Level: 2100 ± 220mA
Current: 23μA (TYP)
Shutdown Current: 0.1μA (TYP)
Full Set of Protections
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
APPLICATIONS
Digital TV
Set-Top Box
Motherboard USB Power Switch
USB Device Power Switch