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