MP8100

Precision High-Side

Current-Sense Amplifier

INITIAL RELEASE – SPECIFICATIONS SUBJECT TO CHANGE

MP8100 Rev. 0.91

www.MonolithicPower.com

1

4/14/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

The Future of Analog IC Technology

TM

TM

DESCRIPTION

The MP8100 is a low-cost, precision, high-side

current-sense amplifier. This device operates

from a single 2.5V to 18V supply and typically

consumes 17µA. 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

1.5V to 18V 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.

FEATURES

• Low-Cost, Compact Current-Sense Solution

• 17µA Typical Supply Current

• 2.5V to 18V Operating Supply Voltage

• 1.5V to 18V Input Common Mode Range

• 1µA Typical Shutdown Current

• 250µV Input Offset Voltage

• High Current Sensing Capability

• Low 100mΩ Output Impedance (Optional)

• Available in an 8-Pin SOIC Package

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 Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

MP8100

RG1

VCC

SHDN

GND

3

7

1

4

6

8

5

RG2

OUT2

OUT1

100pF

Opt.

LOAD

MP8100_TAC_S01

SHUTDOWN

VOLTAGE

--

+

--

+

Opt.