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© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN4010 Rev. 1.0.1
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
2A typical offset current
3.5A quiescent current
-0.2% accuracy
SOT23-5 package
6-lead MicroPak™ future package option
Applications
Battery chargers
Smart battery packs
DC motor control
Over-current monitor
Power management
Programmable current source
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Description
The FAN4010 is a high-side current sense amplifi er
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 fl exibility, 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.
Ordering Information
Part Number
Package Pb-Free
Operating
Temperature Range
Packaging
Method
FAN4010IS5X
SOT23-5 Yes -40°C to +85°C Reel
FAN4010IL6X*
MicroPak-6 Yes -40°C to +85°C Reel
Moisture sensitivity level for all parts is MSL-1.
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
*Future package option.
FAN4010
High-Side Current Sensor
Functional Block Diagram and Typical Circuit
Load
1007
I
OUT
V
IN
R
OUT
2
3
5
4
I
OUT
V
IN
Load
1
GND
NC
V
OUT
V
IN
R
SENSE
R
Load
Figure 1. Functional Block Diagram and Typical Circuit
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