High-Side Current Sensor
FAN4010 High-Side Current Sensor
March 2007
FAN4010 High-Side Current Sensor
Features at +5V
■ Low cost, accurate, hig...
Description
FAN4010 High-Side Current Sensor
March 2007
FAN4010 High-Side Current Sensor
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 ■ SOT23-5 package ■ 6-lead MicroPak™ future package option
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 PC’s, 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.
Applications
■ Battery chargers ■ Smart battery packs ■ DC motor control ■ Over-current monitor ■ Power management ■ Programmable current source
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Functional Block Diagram and Typical Circuit
VIN 1007
1 2 3
NC Load
Load
RLoad
5
GND
RSENSE
VIN
IOUT
4
VIN
VOUT ROUT
IOUT
Figure 1. Functional Block Diagram and Typical Circuit
Ordering Informat...
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