MIC94070YC6 データシートの表示（PDF） - Micrel

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MIC94070YC6

High Side Power Switches

Micrel 

MIC94070/71/72/73

High Side Power Switches

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.

MIC94070-71 feature rapid turn on while MIC94072-73

provide a slew rate controlled Soft-Start turn-on of 800µs

(typical) to prevent in-rush current from glitching supply

rails.

An active pull-down on the enable input keeps

MIC94070-73 in a default OFF state until the EN pin is

pulled to a high level. Built-in level shift circuitry allows

low voltage logic signals to switch higher supply

voltages, or vice versa; high level logic signals can

control low level voltages.

MIC94070-73’s operating voltage range makes them

suitable for 1-cell Lithium ion and 2- to 3-cell

NiMH/NiCad/Alkaline powered systems, as well as all 5V

applications. Their low operating current of 2µA and low

shutdown current of <1µA maximize battery life.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

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

________________________________________________________________________________________________________

Typical Application

MIC94070, 72

Load Switch Application

MIC94071, 73

Load Switch with Capacitive Load Discharge

MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

September 2007

M9999-090507

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