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MLF-packaged small-load switches extend battery life in portables

San Jose, Calif.—Micrel Inc. has launched the MIC94040/1/2/3, a family of high side load switches featuring its MLF packaging technology that extends battery life by reducing the on-resistance (RDSON) of the devices down to 28mohm.

The chips are aimed at a wide variety of high-end portable, battery powered consumer devices, including smart/feature phones, personal multimedia and navigation, and Ultra Mobile PCs (UMPCs).

The devices' thermal performance allows more than 3A continuous current from a tiny 1.2mm x 1.2mm package, enabling applications such as UMPCs to use the MIC94040/1/2/3 for high current circuits.

Each device operates from 1.7V to 5.5V input and can be controlled with very low 1.5V logic due to a novel level shift circuitry that allows it to control higher voltage supplies. The MIC94040 and MIC94041 feature rapid turn on, while the MIC94042 and MIC94043 provide a slew rate controlled Soft-Start turn-on of 116µs (typical) to prevent in-rush current. In addition, the MIC94041 and MIC94043 feature an active load discharge circuit that insures capacitive loads are automatically discharged whenever the main switch is in an OFF state.

Pricing: Starts at $0.34 for 10K quantities.
Availability: Volume quantities.

Datasheet: Click here.

Micrel Inc., www.micrel.com

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