FAN4010IL6X_F113 [FAIRCHILD]
High-Side Current Sensor; 高侧电流传感器
| 型号： | FAN4010IL6X_F113 |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | High-Side Current Sensor |
| 文件： | 总9页 (文件大小：448K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February 2008
FAN4010
High-Side Current Sensor
Features at +5V
Description
■ Low cost, accurate, high-side current sensing
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.
■ 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
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.
■ 6-lead MicroPak™ MLP package
Applications
■ Battery chargers
■ Smart battery packs
■ DC motor control
■ Over-current monitor
■ Power management
■ Programmable current source
Functional Block Diagram and Typical Circuit
Rsense
Load
VIN
100
6
5
4
1
2
3
V
Load
GND
NC
IN
RLoad
NC
VOUT
IOUT
ROUT
IOUT
Figure 1. Functional Block Diagram and Typical Circuit
Ordering Information
Part Number
Package
Operating Temperature Range Packaging Method
MicroPak™ MLP-6
-40°C to +85°C
Reel
FAN4010IL6X_F113
All packages are lead free per JEDEC: J-STD-020B standard.
Moisture sensitivity level for all parts is MSL-1.
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
Pin Configurations
MicroPak™ MLP
VIN
6
5
4
1
2
3
Load
GND
NC
IOUT
NC
Figure 2. MicroPak™ MLP (Top View)
Pin Assignments
Pin #
Name
Description
2, 4
5
NC
No Connect; leave pin floating
GND
Ground
3
I
Output current, proportional to V - V
IN
OUT
Load
1
V
Input voltage (supply voltage)
Connection to load or battery
IN
6
Load
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
2
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable
above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition,
extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute
maximum ratings are stress ratings only.
Symbol
VS
Parameter
Min.
Max.
6.3
Unit
V
Supply Voltage
0
0
VIN
Input Voltage Range
6.3
V
Reliability Information
Symbol
Parameter
Min.
Typ.
Max.
Unit
TJ
TSTG
TL
Junction Temperature
+150
+150
+260
°C
°C
°C
Storage Temperature Range
-65
Reflow Temperature (Soldering)
Package Thermal Resistance(1)
456
°C/W
θJA
Note:
1. Package thermal resistance (θJA), JEDEC standard, multi-layer test boards, still air.
Electrostatic Discharge Protection
Symbol
HBM
ESD Standard
Value
Human Body Model
Charged Device Model
5kV
1kV
CDM
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended ope-
rating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recom-
mend exceeding them or designing to absolute maximum ratings.
Symbol
TA
Parameter
Min.
-40
2
Typ.
Max.
+85
6
Unit
°C
V
Operating Temperature Range
VS
Supply Voltage Range
Input Voltage Range
VIN
2
6
V
VSENSE
Sensor Voltage Range, VSENSE = VIN - VLoad; ROUT = 0Ω
0
2.5
V
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
3
Electrical Characteristics at +5V
TA = 25°C, Vs = VIN = 5V, ROUT = 100Ω, RSENSE = 100Ω, unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Frequency Domain Response
P
V
IN = -40dBm(2),
SENSE = 10mV
IN = -20dBm(3),
SENSE = 100mV
BWss
Small Signal Bandwidth
600
2
kHz
P
V
BWLs
VIN
Large Signal Bandwidth
Input Voltage Range
MHz
V
VIN = Vs
2
6
VSENSE = 0V
0
1
9
ꢀA
ꢀA
VSENSE = 10mV
90
100
1.000
2.00
10.0
3.5
110
IOUT
Output Current(1,4)
VSENSE = 100mV
0.975
1.95
9.7
1.025
2.05
10.3
5.0
mA
mA
mA
ꢀA
VSENSE = 200mV
VSENSE = 1V
Supply Current(1)
VSENSE = 0V, GND pin current
Is
2
nA
ISENSE
Load Pin Input Current
R
R
SENSE = 100Ω,
ACY
Gm
Accuracy
-2.5
-0.2
2.5
%
SENSE = 200mV(1)
Transconductance
IOUT /VSENSE
10000
ꢀA/V
Notes:
1. 100% tested at 25˚C.
2. -40dBm = 6.3mV into 50Ω.
pp
3. -20dBm = 63mV into 50Ω.
pp
4. Includes input offset voltage contribution.
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
4
Typical Performance Characteristics
TA = 25°C, Vs = VIN = 5V, ROUT = 100Ω, RSENSE = 100Ω, unless otherwise noted.
10
250
200
150
100
50
VS = 5V
VIN = 5V
R
OUT = 0Ω
Average of 100 parts
ROUT = 0Ω
+1 SIGMA
Average
ROUT = 100Ω
1
0
-50
-100
-150
-1 SIGMA
0.1
0.01
0.1
1
0.1m
1m
10m
100m
1
10
VSENSE (V)
VSENSE (V)
Figure 3. VSENSE vs. Output Current
Figure 4. Output Current Error vs. VSENSE
10.4
3
VSENSE = 1V
Vs = 5V
V
IN = 5V
ROUT = 100Ω
VSENSE = 1V
RL= 0Ω
10.2
10.0
9.8
0
-3
VSENSE = 0.1V
VSENSE = 0.01V
-6
9.6
-9
PIN = -20dBm of VSENSE = 0.1V & 1V
P
IN = -40dBm of VSENSE = 0.01V
9.4
-12
-40
-20
0
20
40
60
80
0.01
0.1
1
10
Temperature (°C)
Frequency (MHz)
Figure 5. Output Current vs. Temperature
Figure 6. Frequency Response
12
12
10
8
ROUT = 0Ω
ROUT = 100Ω
VSENSE = 1V
VSENSE = 1V
10
VSENSE = 0.8V
VSENSE = 0.8V
VSENSE = 0.6V
VSENSE = 0.4V
VSENSE = 0.2V
8
VSENSE = 0.6V
6
6
VSENSE = 0.4V
4
4
VSENSE = 0.2V
2
2
0
0
-2
-2
0
1
2
3
4
5
0
1
2
3
4
5
VIN (V)
VIN (V)
Figure 7. Transfer Characteristics
Figure 8. Transfer Characteristics
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
5
Typical Performance Characteristics (Continued)
TA = 25°C, Vs = VIN = 5V, ROUT = 100Ω, RSENSE = 100Ω, unless otherwise noted.
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
2.5
2.0
1.5
1.0
0.5
0
VSENSE = 200mV
OUT = 0Ω
Average of 100 parts
VIN = 5V
IN = -20dBm
OUT = 100Ω
R
P
R
+1 SIGMA
Average
VSENSE = 100mV
-0.5
-1.0
-1.5
-2.0
-2.5
-1 SIGMA
VSENSE = 10mV
VSENSE = 1mV
0.00001 0.0001 0.001
0.01
0.1
1
10
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Frequency (MHz)
VIN (V)
Figure 9. CMRR vs. Frequency
Figure 10. VIN vs. Output Current Error
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
VIN = 5V
R
OUT = 100Ω
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
VSENSE (V)
Figure 11. Supply Current vs. VSENSE
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
6
to compensate for this effect. Additionally, self heating
due to load currents introduces a nonlinearity error.
Care must be taken not to exceed the maximum power
dissipation of the copper trace.
Application Information
Detailed Description
The FAN4010 measures the voltage drop (VSENSE
)
across an external sense resistor located in the high
voltage side of the circuit. VSENSE is converted to a
linear current via an internal operational amplifier and
precision 100Ω resistor. The value of this current is
INPUT
LOAD
R
SENSE
0.3in COPPER
0.3in COPPER
0.1in COPPER
V
SENSE/100Ω (internal). Output current flows from the
IOUT pin to an external resistor ROUT to generate an
output voltage proportional to the current flowing to
the load.
6
5
4
1
2
V
Load
GND
NC
IN
Use the following equations to scale a load current to
an output voltage:
NC
VOUT
V
SENSE = ILoad • RSENSE
(1)
(2)
I
3
OUT
VOUT = 0.01 x VSENSE x ROUT
ROUT
Load
6
Figure 13. Using PCB Trace for RSENSE
RLoad
+
Rsense
1
Vsense
100
-
Selecting R
IOUT
OUT
3
VIN
V
IN
ROUT can be chosen to obtain the output voltage ran-
ge required for the particular downstream application.
For example, if the output of the FAN4010 is intended
to drive an analog-to-digital convertor (ADC), ROUT
should be chosen such that the expected full-scale
output current produces an input voltage that matches
the input range of the ADC. For instance, if expected
loading current ranges from 0 to 1A, a RSENSE resistor
of 1Ω produces an output current that ranges from 0 to
10mA. If the input voltage range of the ADC is 0 to 2V,
a ROUT value of 200Ω should be used.
VOUT
ROUT
Figure 12. Functional Circuit
SENSE
Selecting R
Selection of RSENSE is a balance between desired accu-
racy and allowable voltage loss. Although the FAN4010
is optimized for high accuracy with low VSENSE values, a
larger RSENSE value provides additional accuracy. How-
ever, larger values of RSENSE create a larger voltage
drop, reducing the effective voltage available to the load.
This can be troublesome in low-voltage applications.
Because of this, the maximum expected load current
and allowable load voltage should be well understood.
Although higher values of VSENSE can be used, RSENSE
should be chosen to satisfy the following condition:
The input voltage and full-scale output current (IOUT_
FS) needs to be taken into account when setting up the
output range. To ensure sufficient operating head-
room, choose:
(ROUT • IOUT_FS) such that
VIN - VSENSE - (ROUT • IOUT_FS) > 1.6V
(4)
Output current accuracy for the recommended VSENSE
levels between 10mV and 200mV are typically much
better than 1%. As a result, the absolute output volta-
ge accuracy is dependent upon the precision of the
output resistor.
10mV < VSENSE < 200mV
(3)
For low-cost applications where accuracy is not as
important, a portion of the printed circuit board (PCB)
trace can be used as an RSENSE resistor. Figure 13
shows an example of this configuration. The resistivity
of a 0.1 inch wide trace of two-ounce copper is about
30mΩ/ft. Unfortunately, the resistance temperature
coefficient is relatively large (approximately 0.4% / C),
so systems with a wide temperature range may need
Make sure the input impedance of the circuit con-
nected to VOUT is much higher than ROUT to ensure
accurate VOUT values.
Since the FAN4010 provides a trans-impedance func-
tion, it is ideal for applications involving current rather
than voltage sensing.
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
7
Mechanical Dimensions
2X
0.05
1.45
C
B
(1)
2X
0.05 C
(0.49)
5X
1.00
(0.75)
(0.52)
1X
A
TOP VIEW
0.55MAX
(0.30)
6X
PIN 1
0.05 C
0.05
0.00
RECOMMENED
LAND PATTERN
0.05 C
C
0.45
0.35
0.10
6X
0.00
0.25
6X
0.15
1.0
DETAIL A
0.10
C B A
0.40
0.30
0.05
C
0.35
0.25
5X
5X
0.40
0.30
DETAIL A
PIN 1 TERMINAL
0.075 X 45
CHAMFER
0.5
BOTTOM VIEW
(0.05)
6X
(0.13)
4X
Notes:
1. CONFORMS TO JEDEC STANDARD M0-252 VARIATION UAAD
2. DIMENSIONS ARE IN MILLIMETERS
3. DRAWING CONFORMS TO ASME Y14.5M-1994
MAC06AREVC
Figure 14. 6-Lead MicroPak™ Molded Leadless Package (MLP)
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
8
© 2007 Fairchild Semiconductor Corporation
FAN4010 Rev. 1.0.5
www.fairchildsemi.com
9
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