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