MP8110

Precision High-Side

Current-Sense Amplifier

MP8110 Rev. 0.9

www.MonolithicPower.com

1

9/21/2007

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2007 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP8110 is a low-cost, precision, high-side

current-sense amplifier. This device operates

from a single 2.5V to 40V supply and typically

consumes 12µA. It is ideal for today’s notebook

computers, cell phones and other systems

where battery/DC current monitoring is critical.

High-side current monitoring is especially useful

in battery-powered systems since it does not

interfere with the ground path of the battery

charger. The input common-mode range of

1.4V to 40V is independent of the supply

voltage and ensures that the current-sense

feedback remains viable even when connected

to a 2-cell battery pack in deep discharge.

This device is available in 8-pin SOIC and

MSOP packages.

FEATURES

• Low-Cost, Compact Current-Sense Solution

• 12µA Typical Supply Current

• 2.5V to 40V Operating Supply Voltage

• 1.4V to 40V Input Common Mode Range

• 3µA Typical Shutdown Current

• 400µV Input Offset Voltage

• High Current Sensing Capability

• Integrated Buffer Amplifier

• Available in 8-Pin SOIC and MSOP packages,

APPLICATIONS

• Portable PCs

• PDA’s

• Smart Battery Packs

• Cell Phones

• Portable Test/Measurement Systems

• Battery-Operated Systems

• Energy Management Systems

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP8110

RG1

VCC

SHDN

GND

RG2

OUT2

OUT1

Opt.

100pF

+

10uF

0.1uF

SHUTDOWN

ON OFF