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Power Semiconductors

Single-Chip Load Switch IC Exhibits Low On-Resistance

26 February 2016

Toshiba America Electronic Components, Inc. has introduced three single-chip load switch ICs: the TCK106AF, TCK107AF and TCK108AF. By mounting high performance chips on the industry standard SOT-25 package, Toshiba's new ICs feature low on-resistance, low quiescent current, low loss, low standby current, high performance switching characteristics, and mountability for general use. The parts help reduce power consumption in various electronic equipment, including mobile devices.

Toshiba TCK power IC (Source: Toshiba).Toshiba TCK power IC (Source: Toshiba).Specifications include an on-resistance of 63 mΩ (typ.) at an input voltage of 5.0 V and 71 mΩ (typ.) at an input voltage 3.3 V; quiescent current of 110 nA (typ.) at 5.5 V; and maximum output current rating of 1.0 A. The IC has a built-in slew rate control driver, and built in auto-discharge.

Fabricated using a Toshiba CMOS process that contains an output transistor and an output driver, the single chip IC load switches provide a smaller footprint than switches composed of multiple discrete components, suiting them for space-critical portable applications. The TCK106AF, TCK107AF and TCK108AF help reduce power consumption in applications including tablets, laptops, DSCs, DVCs, and audio and gaming equipment.

In addition, with integrated slew rate control drivers and low on-resistance P-channel MOSFETs and N-channel MOSFETs, Toshiba's load switch ICs reduce system power consumption via power supply distribution or power supply control for each function block. The parts allow for low-leakage load switching, while maintaining low on-resistance.

The IC comes in a small outline transistor package measuring 2.9 by 2.8 mm by 1 mm thick.

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