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AA1850-High Side Current Monitor
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Data Sheet
Package:SOT23
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General Description
The AA1850 is a high side current sense monitor. It takes a high side voltage developed across
a current shunt resistor and translates it into a proportional output current. A customer
defined output resistor converts the output current into a reference voltage. It operates
over a wide input voltage range, from 2.5V to 20V and makes it suitable for many
applications. A minimum operating current of 4uA, combined with its SOT23 package
make it a right solution for portable equipment.

Features
.Low cost and accurate high-side current monitor
.Up to 2.5V sense voltage
.2.5V – 20V supply range
.4uA quiescent current
.1% typical accuracy

Applications
.Battery chargers
.DC motor control
.Over current monitor
.Power management
.Porgrammable current source