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MAX4373FESAMAXIMN/a16avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373FEUAMAXIMN/a594avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373FEUAMAXN/a50avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373FEUAMAXIM ?N/a6avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373HESAMAXIMN/a4avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373HESAMAXN/a2056avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373HEUAMAXN/a50avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373TESAMAXIMN/a1avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373TEUAMAXIMN/a46avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4373TEUAMAXN/a123avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4374HEUBMAXIMN/a2683avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4374HEUBMAXIM ?N/a250avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4374HEUBMAXN/a476avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4374TEUBMAXIM ?N/a131avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4374TEUBMAXIMN/a6917avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4374TEUBMAXN/a1228avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4375FESDMAXIMN/a3avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4375FEUBMAXIM ?N/a20avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4375FEUBMAXIN/a1263avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4375HESDMAXN/a15avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4375HEUBMAXIMN/a1895avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4375TEUBMAXIMN/a2393avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
MAX4375TEUBMAXIM ?N/a20avaiLow-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs


MAX4374TEUB ,Low-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICsFeaturesThe MAX4373/MAX4374/MAX4375 low-cost, micropow- Current-Sense Amplifier plus Internal Comp ..
MAX4374TEUB+ ,Low-Cost, Micropower, High-Side Current-Sense Amplifier + Comparator + Reference ICsFeaturesThe MAX4373/MAX4374/MAX4375 low-cost, micropow-• Integrated Current-Sensing Solution Simpli ..
MAX4374TEUB+T ,Low-Cost, Micropower, High-Side Current-Sense Amplifier + Comparator + Reference ICsApplications Ordering Information continued at end of data sheet.Notebook ComputersTypical Operatin ..
MAX4375FESD ,Low-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICsApplicationsILOADNotebook Computers+ V -SENSE V = 0 TO 28VINPortable/Battery-Powered SystemsRSENS ..
MAX4375FEUB ,Low-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICsMAX4373/MAX4374/MAX437519-1630; Rev 0; 3/00Low-Cost, Micropower, High-Side Current-SenseAmplifier + ..
MAX4375FEUB ,Low-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICsFeaturesThe MAX4373/MAX4374/MAX4375 low-cost, micropow- Current-Sense Amplifier plus Internal Comp ..
MAX8211CPA ,Microprocessor Voltage Monitors with Programmable Voltage Detectionapplications where theMAX8211CPA 0°C to +70°C 8 Plastic DIPmaximum supply voltage is less than 16.5 ..
MAX8211CPA ,Microprocessor Voltage Monitors with Programmable Voltage Detectionblock diagrams of Figures 1 and 2, theMAX8211 and MAX8212 each contain a 1.15V refer-ence, a compar ..
MAX8211CPA ,Microprocessor Voltage Monitors with Programmable Voltage Detectionblock diagrams of Figures 1 and 2, theMAX8211 and MAX8212 each contain a 1.15V refer-ence, a compar ..
MAX8211CPA+ ,Microprocessor Voltage Monitors with Programmable Voltage DetectionFeaturesMaxim’s MAX8211 and MAX8212 are CMOS micropower  µP Power-Fail Warningvoltage detectors th ..
MAX8211CSA ,Microprocessor Voltage Monitors with Programmable Voltage DetectionApplicationsMAX8211EJA -40°C to +85°C 8 CERDIPµP Voltage MonitoringMAX8211ETY -40°C to +85°C 8 TO-9 ..
MAX8211CSA ,Microprocessor Voltage Monitors with Programmable Voltage DetectionELECTRICAL CHARACTERISTICS (continued)(V+ = 5V, T = +25°C, unless otherwise noted.)AMAX8211 MAX8212 ..


MAX4373FESA-MAX4373FEUA-MAX4373HESA-MAX4373HEUA-MAX4373TESA-MAX4373TEUA-MAX4374HEUB-MAX4374TEUB-MAX4375FESD-MAX4375FEUB-MAX4375HESD-MAX4375HEUB-MAX4375TEUB
Low-Cost / Micropower / High-Side Current-Sense Amplifier Comparator Reference ICs
General Description
The MAX4373/MAX4374/MAX4375 low-cost, micropow-
er, high-side current-sense supervisors contain a high-
side current-sense amplifier, bandgap reference, and
comparator with latching output. They feature a voltage
output that eliminates the need for gain-setting resistors,
making them ideal for today’s notebook computers, cell
phones, and other systems where battery/DC current
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 0 to +28V input common-mode range is
independent of the supply voltage, which ensures that
the current-sense feedback remains viable even when
connected to a battery pack in deep discharge.
The comparator output of the MAX4373/MAX4374/
MAX4375 is latched to provide a turn-off flag that
doesn’t oscillate. In addition, the MAX4374/MAX4375
contain a second comparator for use in window-detec-
tion functions. The MAX4373/MAX4374/MAX4375 are
available in three different gain versions (T = +20V/V,
F = +50V/V, H = +100V/V) and use an external sense
resistor to set the sensitivity of the input voltage to the
load current. These features offer a high level of inte-
gration, resulting in a simple and compact current-
sense solution.
The MAX4373/MAX4374/MAX4375 operate from a sin-
gle +2.7V to +28V supply and consume 50µA. They are
specified for the extended operating temperature range
(-40°C to +85°C) and are available in 8-pin and 10-pin
µMAX packages.
________________________Applications

Notebook Computers
Portable/Battery-Powered Systems
Smart Battery Packs/Chargers
Cell Phones
Power-Management Systems
General-System/Board-Level Current Monitoring
Precision Current Sources
Features
Current-Sense Amplifier plus Internal Comparator
and Bandgap Reference
50µA Supply Current Single +2.7V to +28V Operating Supply0.66% Full-Scale AccuracyInternal Bandgap ReferenceLatching Comparator OutputThree Gain Versions Available (+20V/V, +50V/V,
+100V/V)
Wide 0 to +28V Common-Mode Range,
Independent of Supply Voltage
MAX4373/MAX4374/MAX4375
Low-Cost, Micropower, High-Side Current-Sense
Amplifier + Comparator + Reference ICsypical Operating Circuit

19-1630; Rev 0; 3/00
Pin Configurations appear at end of data sheet.
Ordering Information
MAX4373/MAX4374/MAX4375
Low-Cost, Micropower, High-Side Current-Sense
Amplifier + Comparator + Reference ICs
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VCC= +2.7V to +28V, VRS+= 0 to +28V, VSENSE= 0, VRESET= 0, RLOAD= 1MΩ, TA= TMINto TMAX, 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 the lesser of
(VCC+ 0.3V) or +15V
CIN1, CIN2, RESET to GND........................-0.3V to the lesser of
(VCC+ 0.3V) or +12V
Differential Input Voltage (VRS+ - VRS-)..............................±0.3V
COUT1, COUT2 to GND........................................-0.3V to +6.0V
Current into Any Pin..........................................................±10mA
Continuous Power Dissipation (TA= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C).............330mW
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
10-Pin µMAX (derate 5.6mW/°C above +70°C)...........444mW
14-Pin SO (derate 8.3mW/°C above +70°C)................667mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX4373/MAX4374/MAX4375
Low-Cost, Micropower, High-Side Current-Sense
Amplifier + Comparator + Reference ICs
ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.7V to +28V, VRS+= 0 to +28V, VSENSE= 0, VRESET= 0, RLOAD= 1MΩ, TA= TMINto TMAX, unless otherwise noted. Typical
values are at TA= +25°C.) (Note 1)
Typical Operating Characteristics
(VRS+ = +12V, VCC = +12V, RLOAD = 1MΩ, VRESET= 0, VSENSE = 100mV, VPULL-UP= +5V, RPULL-UP= 10kΩ, TA= +25°C, unless
otherwise noted.)
MAX4373/MAX4374/MAX4375
Low-Cost, Micropower, High-Side Current-Sense
Amplifier + Comparator + Reference ICs
Note 1:
All devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2:
Guaranteed by PSR test.
Note 3:
Guaranteed by OUT Voltage Error test.
Note 4:
Guaranteed by Gain Accuracy test. Output voltage is internally clamped not to exceed 12V.
Note 5:
Total OUT Voltage Error and Full-Scale Accuracy are the sum of gain and offset voltage errors.
Note 6:
Measured at IOUT= -500µA (RLOAD= 4kΩfor gain of +20V/V, RLOAD= 10kΩfor gain of +50V/V, RLOAD= 20kΩfor gain of
+100V/V).
Note 7:
+6.25mV = 1/16 of +100mV full-scale voltage.
Note 8:
The device will not experience phase reversal when overdriven.
Note 9:
All comparator tests are done with VRS+= +12V.
Note 10:
VPULL-UPis defined as an externally applied voltage through a resistor to pull up the comparator output.
ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.7V to +28V, VRS+= 0 to +28V, VSENSE= 0, VRESET= 0, RLOAD= 1MΩ, TA= TMINto TMAX, unless otherwise noted. Typical
values are at TA= +25°C.) (Note 1)
MAX4373/MAX4374/MAX4375
Low-Cost, Micropower, High-Side Current-Sense
Amplifier + Comparator + Reference ICs
8410121416182022242628
TOTAL OUTPUT ERROR
vs. SUPPLY VOLTAGE

MAX4373 toc04
SUPPLY VOLTAGE (V)
OUTPUT ERROR (%)
TOTAL OUTPUT ERROR
vs. SENSE VOLTAGE
MAX4373 toc05
VSENSE (mV)
OUTPUT ERROR (%)
TOTAL OUTPUT ERROR
vs. SENSE VOLTAGE
MAX4373 toc06
VSENSE (mV)
OUTPUT ERROR (%)
TOTAL OUTPUT ERROR
vs. SENSE VOLTAGE
MAX4373 toc07
VSENSE (mV)
OUTPUT ERROR (%)8410121416182022242628
TOTAL OUTPUT ERROR
vs. COMMON-MODE VOLTAGE

MAX4373 toc08
COMMON-MODE VOLTAGE (V)
OUTPUT ERROR (%)
INPUT
OUTPUT
20µs/div
200mV
600mV
30mV
10mV
SMALL-SIGNAL PULSE RESPONSE
(AV = +20V/V)

MAX4373 toc09
INPUT
OUTPUT
20µs/div
SMALL-SIGNAL PULSE RESPONSE
(AV = +50V/V)

MAX4373 toc10
Typical Operating Characteristics (continued)

(VRS+ = +12V, VCC = +12V, RLOAD = 1MΩ, VRESET= 0, VSENSE = 100mV, VPULL-UP= +5V, RPULL-UP= 10kΩ, TA= +25°C, unless
otherwise noted.)
MAX4373/MAX4374/MAX4375
Low-Cost, Micropower, High-Side Current-Sense
Amplifier + Comparator + Reference ICs
Typical Operating Characteristics (continued)

(VRS+ = +12V, VCC = +12V, RLOAD = 1MΩ, VRESET= 0, VSENSE = 100mV, VPULL-UP= +5V, RPULL-UP= 10kΩ, TA= +25°C, unless
otherwise noted.)
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