Semtech Adds Ultra-Low RDS(on) Load Switch Family to FemtoSwitch Platform

Semtech Corp.  has announced the latest family of load switches in its FemtoSwitch product platform. The new, ultra-low RDS(on) load switches are well suited for 5 V, 15 W 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 extends Semtech’s FemtoSwitch platform of high-performance analog load switch ICs. It 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 3 A current-limit, as well as from over-temperature with a shutdown circuit.

“This expansion to our FemtoSwitch load switch platform enhances Semtech’s high performance, low power product portfolio,” said Francois Ricodeau, Product Line Manager for Semtech’s Power and High-Reliability Products Group. “By providing ultra-low RDS(on) load switches geared toward USB-PD type-C port controller applications, we are able to meet the demands of the fast-growing portable electronics market.”

Key Features of the Ultra-Low RDS(on) Load Switch Family

  • Sophisticated integrated circuitry for ultra-low, 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
  • Ultra-small 0.9 mm by 1.4 mm package

The ultra-low RDS(on) load switches (SC33001A and SC33001AH) are available immediately in production quantities and are priced at $0.20 each in 1,000-piece lots.

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