Integrated 7.8 mΩ power switch handles 9A, with reverse-blocking

October 07, 2015 // By Graham Prophet
In Silego Technology’s range of single-channel, self-contained, reverse-blocking integrated power-switches, the SLG59M1600V is optimised for high-current, low-voltage power-rail distribution, power-rail sequencing, or any other power-rail application where power flow from load to source cannot be tolerated.

With an internal charge pump, output voltage discharge circuitry, user-adjustable inrush current, thermal protection, and ON/OFF control, the SLG59M1600V is a completely self-contained integrated power switch. The SLG59M1600V’s reverse current blocking feature protects the input power source against current flow from output to input when the power switch is OFF. While the IC is designed to operate on VDD supply voltages from 2.5V to 5V, the input voltage range of the power switch is designed to operate from 0.85V to VDD. The lower 0.85V limit has become increasingly more important as next-generation microprocessor core voltages continue a downward trend.

Using the company’s CuFET technology plus integrated power MOSFETs, the SLG59M1600V’s 7.8 mΩ RD SON generates a very low voltage drop during steady-state operation. Up to 9A load currents, the SLG59M1600V dissipates little power as the voltage drop is less than 70 mV.

Available in a low thermal resistance 14-pin 1.0 x 3.0 mm STDFN package, the SLG59M1600V is fully specified from -40°C to 85°C. Additional specifications include: low reverse-current leakage when OFF of 0.5 µA; low operating supply current of 40 µA; low-supply current when OFF of 1 µA.

Silego; www.silego.com