FAN4010: High-Side Current Sense Amplifier

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

• Low-Cost, Accurate, High-Side Current Sensing
• Output Voltage Scaling
• Up to 2.5 V Sense Voltage
• 2 V to 6 V Supply Range
• 2 µA Typical Offset Current
• 3.5 µA Quiescent Current
• -0.2% Accuracy