General Description

The MIC94070-73 are high-side load switches designed for operation between 1.7V to 5.5V. The devices contain a low on-resistance P-channel MOSFET that supports 1.2A of continuous current. The MIC94071 and MIC94073 feature an active load discharge circuit which insures capacitive loads retain no charge when the main switch is in an OFF state.

Features

• 1.7V to 5.5V input voltage range

• 1.2A continuous operating current

• 3A pulse current

• 120mΩ RDSON (typical)

• Built-in level shift for control logic; can be operated by 1.5V logic.

• Low 2µA quiescent current

• Soft-Start: MIC94072/73

• Micro-power shutdown <1µA

• Load discharge circuit: MIC94071, MIC94073

• Space saving 1.2mm × 1.6mm Thin MLF® package

Applications

• Load switch in portable applications:

- Cellular phones

- PDAs

- MP3 players

- Digital Cameras

- Portable instrumentation

• Battery switch-over circuits

• Level translator