MIC2007/2017

Adjustable Current Limit

Power Distribution Switch

Kickstart is a trademark of Micrel, Inc

MLF and MicroLeadFrame are trademarks of Amkor Technology, 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

General Description

The MIC2007 and MIC2017 are current limiting, high-

side power switches, designed for general purpose

power distribution and control in PCs, PDAs, printers

and other self-powered systems.

The MIC2007 and MIC2017’s primary functions are

current limiting and power switching. They are thermally

protected and will shutdown should their internal

temperature reach unsafe levels. This protects both the

device and the load under high current or fault

conditions.

Features include: user adjustable output slew rate

limiting, automatic load discharge and under voltage

detection. Both devices offer user programmable current

limiting thereby providing designers a continuous

spectrum of current limits from 200mA to 2 Amps.

The MIC2017 offers a unique new feature: Kickstart

which allows momentary high current surges to pass

unrestricted without sacrificing overall system safety.

The MIC2007 and MIC2017 are excellent choices for

USB and IEEE 1394 (FireWire) applications or for any

system where current limiting and power control are

desired.

The MIC2007 and MIC2017 are offered in space saving

6-pin SOT-23 and 2mm x 2mm MLF

Features

• 70mΩ typical on-resistance

• 2.5V – 5.5V operating range

• User adjustable current limit: 0.2A – 2.0A

• Kickstart

™

• User adjustable output slew rate control

• Automatic load discharge

• Thermal protection

• Under voltage lock-out

• Low quiescent current

Applications

• USB / IEEE 1394 power distribution

• Desktop and laptop PCs

• Set top boxes

• Game consoles

• PDAs

• Printers

• Docking stations

• Chargers

_________________________________________________________________________________________________________

Typical Application

VIN

D+/D-

D+/D-

5V Supply

VOUT

GND

ENABLE

MIC2007

MIC2017

USB

Controller

USB

Port

USB

Port

Figure 1. Typical Application Circuit

October 2005

M9999-102805