9 mΩ RDS(on) load switch family for battery-powered portables

February 15, 2017 // By Graham Prophet
Semtech's latest family of load switches in its FemtoSwitch product platform are ultra-low RDS(on) load switches for 5V, 15W USB Power Delivery (USB-PD) type-C port controller applications and other power rail switching applications, such as battery-powered portable electronics.

This product family features slow, soft start when the switch is turned-on to limit the in-rush current. Its output pin provides an auto-discharge function for H-version products, and it is protected from overload faults with a 3A current-limit, as well as from over-temperature with a shutdown circuit.


Features of the devices include;

9mΩ RDS(on) to minimize voltage drop and energy dissipation across the switch

Controlled soft start to limit in-rush current

3A continuous output current to protect from overload faults

Over-temperature protection

0.9mm x 1.4mm package


The ultra-low RDS(on) load switches, SC33001A and SC33001AH are priced at $0.20 (1000)


Semtech; www.semtech.com