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MAX4173FESAMAXIMN/a593avaiLow-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier
MAX4173FEUT-T |MAX4173FEUTTMAXIM N/a3750avaiLow-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier
MAX4173HESAMAXIMN/a1avaiLow-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier
MAX4173TESAMAXIMN/a46avaiLow-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier
MAX4173TESAMAXIM ?N/a40avaiLow-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier
MAX4173TEUT-T |MAX4173TEUTTMAXIMN/a142avaiLow-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier


MAX4173FEUT-T ,Low-Cost / SOT23 / Voltage-Output / High-Side Current-Sense AmplifierMAX4173T/F/H19-1434; Rev 1; 5/99Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier
MAX4173HESA ,Low-Cost / SOT23 / Voltage-Output / High-Side Current-Sense AmplifierFeaturesThe MAX4173 low-cost, precision, high-side current-' Low-Cost, Compact Current-Sense Soluti ..
MAX4173HESA+ ,Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense AmplifierFeaturesThe MAX4173 low-cost, precision, high-side current-♦ Low-Cost, Compact Current-Sense Soluti ..
MAX4173HESA+T ,Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifierfeatures a voltage output that eliminates the need forRange, Functional Down to 0V, Independent ofg ..
MAX4173HEUT ,Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense AmplifierMAX4173 Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier
MAX4173HEUT+T ,Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense AmplifierApplicationsRS+ RS-+3V TO +28VNotebook ComputersVCCPortable/Battery-Powered Systems0.1μFSmart Batte ..
MAX803SQ308T1G , Very Low Supply Current 3-Pin Microprocessor Reset Monitor
MAX803TEXR+ ,3-Pin Microprocessor Reset CircuitsMAX803/MAX809/ 3-Pin Microprocessor Reset CircuitsMAX810
MAX803TEXR+T ,3-Pin Microprocessor Reset CircuitsElectrical Characteristics(V = full range, T = -40°C to +105°C (SOT23) or T = -40°C to +125°C (SC70 ..
MAX803TEXR-T ,3-Pin Microprocessor Reset CircuitsFeaturesThe MAX803/MAX809/MAX810 are microprocessor (µP) Precision Monitoring of +2.5V, +3V, +3.3V ..
MAX803ZEXR+ ,3-Pin Microprocessor Reset CircuitsMAX803/MAX809/ 3-Pin Microprocessor Reset CircuitsMAX810
MAX804RCPA ,3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.625V. Active-high reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-2%. Power-fail comparator. Reset window +-2%ELECTRICAL CHARACTERISTICS(V = 3.17V to 5.5V for the MAX690T/MAX704T/MAX80_T, V = 3.02V to 5.5V for ..


MAX4173FESA-MAX4173FEUT-T-MAX4173HESA-MAX4173TESA-MAX4173TEUT-T
Low-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier
General Description
The MAX4173 low-cost, precision, high-side current-
sense amplifier is available in a tiny SOT23-6 package.
It features a voltage output that eliminates the need for
gain-setting resistors and it is ideal for today’s notebook
computers, cell phones, and other systems where cur-
rent monitoring is critical. High-side current monitoring
is especially useful in battery-powered systems, since it
does not interfere with the ground path of the battery
charger. The input common-mode range of 0 to +28V is
independent of the supply voltage and ensures that the
current-sense feedback remains viable even when con-
nected to a battery in deep discharge. The MAX4173’s
wide 1.7MHz bandwidth makes it suitable for use inside
battery charger control loops.
The combination of three gain versions and a user-
selectable external sense resistor sets the full-scale
current reading. This feature offers a high level of inte-
gration, resulting in a simple and compact current-
sense solution.
The MAX4173 operates from a single +3V to +28V sup-
ply, typically draws only 420µA of supply current over
the extended operating temperature range (-40°C to
+85°C), and is offered in the space-saving SOT23-6
package.
Applications

Notebook Computers
Portable/Battery-Powered Systems
Smart Battery Packs/Chargers
Cell Phones
Power-Management Systems
General System/Board-Level Current Monitoring
PA Bias Control
Precision Current Sources
Features
Low-Cost, Compact Current-Sense Solution Wide 0 to +28V Common-Mode Range
Independent of Supply Voltage
Three Gain Versions Available
+20V/V (MAX4173T)
+50V/V (MAX4173F)
+100V/V (MAX4173H)
±0.5% Full-Scale Accuracy420µA Supply CurrentWide 1.7MHz Bandwidth (MAX4173T)+3V to +28V Operating Supply Available in Space-Saving SOT23-6 Package
MAX4173T/F/H
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Typical Operating Circuit

19-1434; Rev 1; 5/99
Ordering Information
Pin Configurations appear at end of data sheet.
MAX4173T/F/H
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VRS+ = 0 to +28V, VCC = +3V to +28V, VSENSE= 0, TA = TMINto TMAX, RLOAD = ¥unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC, RS+, RS- to GND..........................................-0.3V to +30V
OUT to GND.............................................. -0.3V to (VCC+ 0.3V)
Output Short-Circuit to VCCor GND......................... Continuous
Differential Input Voltage (VRS+- VRS-).............................±0.3V
Current into Any Pin.........................................................±20mA
Continuous Power Dissipation (TA= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW
SOT23-6 (derate 8.7mW/°C above +70°C).................696mW
Operating Temperature Range..........................-40°C to +85°C
Storage Temperature Range............................-65°C to +150°C
Lead Temperature (soldering, 10sec)............................+300°C
MAX4173T/F/H
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Note 1:
All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design.
Note 2:
Guaranteed by Total Output Voltage Error Test.
Note 3:
Total OUT Voltage Error is the sum of gain and offset voltage errors.
Note 4:
+6.25mV = 1/16 of +100mV full-scale voltage.
Note 5:
VSENSEsuch that output stage is in saturation.
Note 6:
The device does not experience phase reversal when overdriven.
ELECTRICAL CHARACTERISTICS (continued)

(VRS+ = 0 to +28V, VCC = +3V to +28V, VSENSE= 0, TA = TMINto TMAX, RLOAD = ¥unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
MAX4173T/F/H
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Typical Operating Characteristics

(VCC= +12V, VRS+= +12V, VSENSE= +100mV, TA= +25°C, unless otherwise noted.)
MAX4173T/F/H
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Typical Operating Characteristics (continued)

(VCC= +12V, VRS+= +12V, VSENSE= +100mV, TA= +25°C, unless otherwise noted.)
MAX4173T/F/H
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Pin Description
Typical Operating Characteristics (continued)

(VCC= +12V, VRS+= +12V, VSENSE= +100mV, TA= +25°C, unless otherwise noted.)
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