MAX4072AUA 查看數據表（PDF） - Maxim Integrated
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MAX4072AUA Datasheet PDF : 14 Pages
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MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
Pin Description
MAX4069
PIN
MAX4070/
MAX4071
1
1
2
2
3
3
4
—
5
4
6
—
7
5
8
6
9
7
10
8
—
—
MAX4072
1
2
3
—
4
—
—
6
7
8
5
NAME
FUNCTION
SHDN
RS-
Shutdown Input. Drive SHDN low to select shutdown mode. Connect SHDN
to VCC for normal operation.
Negative Connection to the External Sense Resistor
RS+ Positive Connection to the External Sense Resistor
N.C. No Connection. Not internally connected.
GND
Ground. For thin QFN packages, also make an external connection from
GND to the under-side exposed paddle.
Adjustable Output Voltage Feedback Input. Connect a resistor-divider
ADJ between REFOUT, ADJ, and GND (MAX4069 only,
see Functional Diagram).
REFOUT Reference Output Voltage (MAX4069/MAX4070/MAX4071)
OUT
Voltage Output. The difference voltage, VOUT - VREF, is proportional to
the voltage difference between RS+ and RS- and indicates the correct
polarity.
VCC
GSEL
Supply Voltage Input. Bypass VCC to GND with a 0.1µF capacitor.
Gain-Setting Input. Connect GSEL low to select gain = 50V/V, or connect
GSEL high to select gain = 100V/V.
REFIN Reference Input Voltage (MAX4072)
Functional Diagram
LOAD
FROM BATTERY
CHARGER
RSENSE
GAIN SELECT
SHUTDOWN
2.7V TO 24V
VCC
RS+
CSA
RS-
MAX4069
OUT TO ADC
GSEL
SHDN
VREF
1.23V
OA
REFOUT
R1
ADJ
GND
R2
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