Power

Load switches suitable for portable electronics

16th February 2017
Alice Matthews

Supplier of analogue and mixed-signal semiconductors, Semtech, has announced the latest family of load switches in its FemtoSwitch product platform. The low RDS(on) load switches are suitable 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 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 3A 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:

  • Sophisticated integrated circuitry for low 9mΩ RDS(on) to minimise 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
  • Small 0.9x1.4mm package

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