Description

The FAN4010 is a high-side current sense amplifier designed for battery-powered systems. Using the FAN4010 for high-side power-line monitoring does not interfere with the battery charger’s ground path. The FAN4010 is designed for portable PCs, cellular phones, and other portable systems where battery/DC power-line monitoring is critical.

To provide a high level of flexibility, the FAN4010 functions with an external sense resistor to set the range of load current to be monitored. It has a current output that can be converted to a ground-referred voltage with a single resistor, accommodating a wide range of battery voltages and currents. The FAN4010 features allow it to be used for gas gauging as well as uni-directional or bi-directional current monitoring.

Features at +5V

■ Low cost, accurate, high-side current sensing

■ Output voltage scaling

■ Up to 2.5V sense voltage

■ 2V to 6V supply range

■ 2μA typical offset current

■ 3.5μA quiescent current

■ -0.2 accuracy

■ 6-lead MicroPak™ MLP package

Applications

■ Battery chargers

■ Smart battery packs

■ DC motor control

■ Over-current monitor

■ Power management

■ Programmable current source