The SGM2558 is a high-side MOSFET switch optimized for general-purpose power distribution requiring circuit protection. A built-in charge pump is used to drive the MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch.
The SGM2558 is internally current limited and has thermal shutdown that protects the device and load. The SGM2558 offers “smart” thermal shutdown that reduces current consumption in fault modes. When a thermal shutdown fault occurs, the output is latched off until the faulty load is removed. Removing the load or toggling the enable input will reset the device output.
This device employs soft-start circuitry that minimizes inrush current in applications where highly capacitive loads are employed. The FAULT output asserts low during over-current and thermal shutdown conditions. Transient faults are internally filtered.
The SGM2558 is available in Green SOIC-8 and TDFN-3×3-8L packages. It is rated over the -40℃ to +85℃ temperature range.
90mΩ (TYP) High-side MOSFET per Channel
1.1A Current Limit
Input Voltage Range: 2.7V to 5.5V
Low Quiescent Current: 28μA (Dual-Channel)
Short-Circuit Protection with Thermal Shutdown
Thermally Isolated Channels
Fault Status Flag with 4ms Filter Eliminates False Assertions
Under-Voltage Lockout Protection for VIN
No Reversed Leakage Current
1.8V Logic-Compatible Inputs
Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC, Test Program 1 with CB Report (SGM2558A)
Available in Green SOIC-8 and TDFN-3×3-8L Packages
General Purpose Power Switching
ACPI Power Distribution
PC Card Hot Swap