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MAX4069AUB+ |MAX4069AUBMAXIMN/a105avaiBidirectional, High-Side, Current-Sense Amplifiers with Reference
MAX4070AUA+Maxim Integrated ProductsN/a3avaiBidirectional, High-Side, Current-Sense Amplifiers with Reference
MAX4070AUA+T |MAX4070AUATMAXIMN/a5422avaiBidirectional, High-Side, Current-Sense Amplifiers with Reference
MAX4071AUA+T |MAX4071AUATMAXIMN/a20000avaiBidirectional, High-Side, Current-Sense Amplifiers with Reference
MAX4072AUA+ |MAX4072AUAMAXIMN/a972avaiBidirectional, High-Side, Current-Sense Amplifiers with Reference


MAX4071AUA+T ,Bidirectional, High-Side, Current-Sense Amplifiers with ReferenceELECTRICAL CHARACTERISTICS(V = V = V = 2.7V to 24V, V = V - V = 0V, I = 0, V = V , V = GND, V = 2.5 ..
MAX4072AUA ,Bidirectional / High-Side / Current-Sense Amplifiers with ReferenceMAX4069–MAX407219-2423; Rev 2; 1/03Bidirectional, High-Side, Current-SenseAmplifiers with Reference
MAX4072AUA+ ,Bidirectional, High-Side, Current-Sense Amplifiers with ReferenceFeaturesThe MAX4069–MAX4072 low-cost, bidirectional, high-♦ Bidirectional, Compact, Current-Sense S ..
MAX4073FAUT ,Low-Cost, SC70, Voltage-Output, High-Side Current-Sense AmplifierFeaturesThe MAX4073 low-cost, high-side current-sense ampli-♦ Low-Cost, Compact, Current-Sense Solu ..
MAX4073FAUT+T ,Low-Cost, SC70, Voltage-Output, High-Side Current-Sense Amplifierfeatures a voltage output that eliminates the need♦ Three Gain Versions Availablefor gain-setting r ..
MAX4073FAUT-T ,Low-Cost, SC70, Voltage-Output, High-Side Current-Sense AmplifierApplications0.1µ FCell PhonesMAX4073T/F/HNotebook ComputersPortable/Battery-Powered SystemsA/D LOAD ..
MAX766CPA ,5V/-12V/-15V or Adjustable / High-Efficiency / Low IQ DC-DC Invertersapplications, so no MAX764CPA 0°C to +70°C 8 Plastic DIPmagnetics design is necessary.MAX764CSA 0°C ..
MAX766CSA ,5V/-12V/-15V or Adjustable / High-Efficiency / Low IQ DC-DC InvertersMAX764/MAX765/MAX76619-0176; Rev 0; 6/94-5V/-12V/-15V or Adjustable,High-Efficiency, Low I DC-DC In ..
MAX766CSA+ ,-5V/-12V/-15V or Adjustable, High-Efficiency, Low-IQ DC-DC InvertersGeneral Description ________
MAX766EPA ,5V/-12V/-15V or Adjustable / High-Efficiency / Low IQ DC-DC InvertersApplications A**Contact factory for availability and processing to MIL-STD-883.__________________Pi ..
MAX766EPA ,5V/-12V/-15V or Adjustable / High-Efficiency / Low IQ DC-DC InvertersApplicationsMAX765C/D 0°C to +70°C Dice*LCD-Bias GeneratorsMAX765EPA -40°C to +85°C 8 Plastic DIPPo ..
MAX766ESA ,5V/-12V/-15V or Adjustable / High-Efficiency / Low IQ DC-DC Invertersapplications. For increased output driveMAX764ESA -40°C to +85°C 8 SOcapability or higher output vo ..


MAX4069AUB+-MAX4070AUA+-MAX4070AUA+T-MAX4071AUA+T-MAX4072AUA+
Bidirectional, High-Side, Current-Sense Amplifiers with Reference
AVAILABLE
UCSP is a trademark of Maxim Integrated Products, Inc.
General Description

The MAX4069–MAX4072 low-cost, bidirectional, high-side, current-sense amplifiers are ideal for monitoringbattery charge and discharge currents in notebooks,cell phones, and other portable equipment. They fea-ture up to 24V input common-mode voltage range, low100µA supply current (which drops to only 10µA inshutdown), and a total output error of less than 1.5%.The wide 1.35V to 24V input common-mode range isindependent of the supply voltage, ensuring that thecurrent-sense feedback remains accurate even whenconnected to a battery pack in deep discharge.To achieve maximum flexibility, an external current-senseresistor is used along with a Gain Select pin to chooseeither 50V/V or 100V/V. A single output pin continuouslymonitors the transition from charge to discharge andavoids the need for a separate polarity output. TheMAX4070 contains an internal 2.5V reference. Thecharging current is represented by an output voltagefrom 2.5V to VCC, while discharge current is given from2.5V to GND. The MAX4071 is similar, but with a refer-ence voltage of 1.5V. The MAX4069 has an adjustablereference voltage, set by two external resistors. TheMAX4072 has an input for an external reference.The MAX4069/MAX4071/MAX4072 operate from a 2.7V to24V single supply. The MAX4070 operates from a 3.6V to24V single supply. All devices are specified over theautomotive operating temperature range, -40°C to+125°C. The MAX4070/MAX4071/MAX4072 are availablein 8-pin µMAX and 8-pin thin QFN packages. TheMAX4069 is available in a 10-pin µMAX®package.
Applications

Notebook Fuel Gauging
Smart-Battery Packs/Chargers
Motor Control
Power-Management Systems
Cell-Phone Battery-Current Monitoring
Features
Bidirectional, Compact, Current-Sense SolutionTotal Output Error Less than 1.5%Selectable Gain of 50V/V or 100V/VWide 1.35V to 24V Common-Mode Range
Independent of Supply Voltage
2.7V to 24V Single-Supply OperationInternal Precision Reference
Adjustable (MAX4069)
2.50V (MAX4070)
1.50V (MAX4071)
Low 100µA Supply Current10µA Supply Current in ShutdownAvailable in Space-Saving Packages
8-Pin Thin QFN (MAX4070/MAX4071/MAX4072)
8-Pin µMAX (MAX4070/MAX4071MAX4072)
10-Pin µMAX (MAX4069)
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
Ordering Information

MAX4070
VBATT = 1.35V TO 24V
VCC = 3.6V TO 24V
FROM BATTERY
CHARGER
RSENSE
LOAD
TO ADC
2.5V
VCC
GSEL
GND
RS-RS+
REFOUT
OUT
SHDN
Typical Operating Circuit
PARTTEMP RANGEPIN-PACKAGETOP
MARK
MAX4069AUB
-40°C to +125°C10 µMAX—
MAX4070AUA
-40°C to +125°C8 µMAX—MAX4070ATA-40°C to +125°C8 Thin QFN-EP*ABN
MAX4071AUA
-40°C to +125°C8 µMAX—MAX4071ATA-40°C to +125°C8 Thin QFN-EP*ABO
MAX4072AUA
-40°C to +125°C8 µMAX—MAX4072ATA-40°C to +125°C8 Thin QFN-EP*ABP
Pin Configurations and Selector Guide appear at end of
data sheet.

*EP = Exposed pad.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VRS+ = VRS- = VCC= 2.7V to 24V, VSENSE= VRS+ - VRS- = 0V, IREFOUT= 0, VSHDN= VCC, VGSEL= GND, VREFIN= 2.5V (MAX4072),TA= TMINto TMAX,unless otherwise noted. Typical values are at TA= +25°C and at VCC= VRS+ = 12V.) (Notes 1, 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.
VCC, RS+, RS- to GND...........................................-0.3V to +26VOUT to GND....................-0.3V to Lesser of (VCC+ 0.3V) or 15VDifferential Input Voltage (VRS+- VRS-)..............................±0.3VGSEL, SHDN, REFOUT, REFIN and ADJ to GND.....................................-0.3V to (VCC+ 0.3V)OUT Short-Circuit Duration to GND or to Lesser of (VCCor 15V)...................................ContinuousREFOUT Short Circuit to VCCor GND........................ContinuousCurrent into Any Pin..........................................................±20mA
Continuous Power Dissipation (TA= +70°C)8-Pin µMAX (derate 4.5 mW/°C above +70°C)............362mW8-Pin Thin QFN (derate 24.4mW/°C above +70°C)...1951mW10-Pin µMAX (derate 5.6 mW/°C above +70°C).......444.4mWOperating Temperature Range.........................-40°C to +125°CJunction Temperature......................................................+150°CStorage Temperature Range.............................-65°C to +150°CLead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
MAX4069/MAX4071/MAX4072 (Note 4)2.724Operating Voltage Range(Note 3)VCCMAX40703.624V
TA = +25°C0.080.25
TA = -40°C to +85°C0.8Input-Referred Offset Voltage(Note 5)VOSVCC = VRS+ =VRS- = 12VTA = TMIN to TMAX1
Common-Mode Input RangeCMVRGuaranteed by CMRR test1.3524VCommon-Mode Rejection RatioCMRR1.35V ≤ VRS+ = VRS- ≤ 24V, VCC = 12V100120dB
Supply CurrentICCVCC = VRS+ = VRS- = 24V, RL = open,TA = TMIN to TMAX100250µA
VCC = VRS+ = VRS- = 5.5V,
SHDN = GND, TA = +25°C9Shutdown Supply CurrentICC SHDNVCC = VRS+ = VRS- = 24V,
SHDN = GND1030µA
Leakage CurrentVRS+ = VRS- = 24V, VCC = 0V0.10.5µA
Input Bias CurrentIRS+, IRS-VCC = VRS+ = VRS- = 24V02.45µAGain = 50V/V75Recommended Full-Scale SenseVoltage (Note 6)VSENSEGain = 100V/V50mV
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
ELECTRICAL CHARACTERISTICS (continued)
(VRS+ = VRS- = VCC= 2.7V to 24V, VSENSE= VRS+ - VRS- = 0V, IREFOUT= 0, VSHDN= VCC, VGSEL= GND, VREFIN= 2.5V (MAX4072),TA= TMINto TMAX,unless otherwise noted. Typical values are at TA= +25°C and at VCC= VRS+ = 12V.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
TA = +25°C±0.25±1.0
TA = - 40°C to + 85°C ±1.5VSENSE = 75mV,VCC = VRS+ = 12V,gain = 50TA = TMIN to TMAX±2.0TA = +25°C±0.25±1.0
TA = - 40°C to + 85°C ±1.5VSENSE = 50mV,VCC = VRS+ = 12V,gain = 100TA = TMIN to TMAX±2.5
TA = +25°C±0.4±1.0
TA = - 40°C to + 85°C ±2.0
MAX4069/MAX4070/MAX4072:VSENSE = -35mV,VCC = VRS+ = 12V,gain = 50TA = TMIN to TMAX±3.0
TA = +25°C±0.8±2.0
TA = - 40°C to + 85°C ±4.0
MAX4069/MAX4070/MAX4072:VSENSE = -17.5mV,VCC = VRS+ = 12V,gain = 100TA = TMIN to TMAX±6
TA = +25°C±1.0±2.5
TA = - 40°C to + 85°C ±4.0
MAX4071:VSENSE = -15mV,VCC = VRS+ = 12V,gain = 50TA = TMIN to TMAX±6.0
TA = +25°C±2.0±5
TA = - 40°C to + 85°C ±10
MAX4071:VSENSE = -7.5mV,VCC = VRS+ = 12V,gain = 100TA = TMIN to TMAX±15
Total OUT Voltage Error (Note 7)
VSENSE = 3mV,V C C = 12V , V RS + = 12V TA = +25°C±3
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
ELECTRICAL CHARACTERISTICS (continued)
(VRS+ = VRS- = VCC= 2.7V to 24V, VSENSE= VRS+ - VRS- = 0V, IREFOUT= 0, VSHDN= VCC, VGSEL= GND, VREFIN= 2.5V (MAX4072),TA= TMINto TMAX,unless otherwise noted. Typical values are at TA= +25°C and at VCC= VRS+ = 12V.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

MAX4071,VCC = 2.7V65150IOUT = 10µA,VSENSE = 100mV,VRS+ = VCCMAX4069/MAX4070/MAX4072,VCC = 3.6V65150
MAX4071,VCC = 2.7V90250OUT Voltage HighVCC - VOH
IOUT = 500µA,VSENSE = 100mV,VRS+ = VCCMAX4069/MAX4070/MAX4072,VCC = 3.6V90250
MAX4071,VCC = 2.7V520IOUT = -10µA,VSENSE = -100mV,VRS+ = VCCMAX4069/MAX4070/MAX4072,VCC = 3.6V520
MAX4071,VCC = 2.7V100250OUT Voltage LowVOL
IOUT = -500µA,VSENSE = -100mV,VRS+ = VCCMAX4069/MAX4070/MAX4072,VCC = 3.6V100250
Gain = 50V/V100-3dB BandwidthBWVSENSE = 50mV,VCC = 12V, CL = 100pFGain = 100V/V40kHz
GSEL = GND50GainAVGSEL = VCC100V/V
Capacitive-Load Stability100pF
Power-Supply Rejection RatioPSRRVCC = 2.7V to 24V(MAX4069/MAX4071/MAX4072),VCC = 3.6V to 24V (MAX4070)100120dB
Logic Low Voltage (GSEL, SHDN)VILVCC = 3.6V or 24V0.6V
Logic High Voltage (GSEL, SHDN)VIHVCC = 3.6V or 24V2VGain-Select Input CurrentIGSELGSEL = VCC = 24V or GND0.011µA
SHDN = VCC = 24V312Shutdown Input CurrentISHDNSHDN = GND, VCC = 24V0.011µA
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
ELECTRICAL CHARACTERISTICS (continued)
(VRS+ = VRS- = VCC= 2.7V to 24V, VSENSE= VRS+ - VRS- = 0V, IREFOUT= 0, VSHDN= VCC, VGSEL= GND, VREFIN= 2.5V (MAX4072),TA= TMINto TMAX,unless otherwise noted. Typical values are at TA= +25°C and at VCC= VRS+ = 12V.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
REFOUT (MAX4069/MAX4070/MAX4071)

TA = +25°C2.442.492.54MAX4069,VCC = 12V(Note 2)TA = TMIN to TMAX2.392.59
TA = +25°C2.452.52.55MAX4070,VCC = 12VTA = TMIN to TMAX2.402.60
TA = +25°C1.471.51.53
Reference Output VoltageVREF
MAX4071,VCC = 12VTA = TMIN to TMAX1.441.56
-40°C ≤ TA ≤ +85°C15Reference Output VoltageTemperature CoefficientTCVREFVCC = 12VTA = TMIN to TMAX20ppm/°C
IREFOUT = 0 to 500µA2Load RegulationΔVREFOUT/ΔIREFIREFOUT = 0 to -100µA4mV/mA
Line RegulationΔVREF/
ΔVCC2.7V ≤ VCC ≤ 24V20µV/V
REF Capacitive-Load Stability500pF
Reference Adjust VoltageThresholdVADJMAX4069, VCC = 12V1.230V
Reference Output Voltage RangeMAX4069, range adjustable with R1 and R2,VCC = 12VVADJ to+4V
Reference Adjust Input CurrentIADJMAX4069, VCC = 12V, VADJ = 1.23V100nA
REFIN (MAX4072 only)

Input-Voltage RangeVCC = 12V14VInput CurrentREFIN = 2.5V, VCC = 12V-60+20µA
Note 1:
All devices are 100% tested at TA= +25°C. Limits over temperature are guaranteed by design.
Note 2:
R1 = 215kΩ, R2 = 210kΩfor the MAX4069 only (see Functional Diagram). This sets REFOUT to 2.49V nominal.
Note 3:
Guaranteed by the PSRR test.
Note 4:
The REFOUT voltage for the MAX4069 should be set such that it does not exceed VCC- 1.1V. Similarly, the maximum REFINvoltage for the MAX4072 should also be less than VCC- 1.1V.
Note 5:
Input-Referred Offset Voltage is defined as the voltage difference between OUT and REFOUT, divided by the selected gainof either 50 or 100, when VSENSE= VRS+- VRS-= 0V.
Note 6:
The negative full-scale sense voltage is limited by the voltage range of OUT from VREFOUTto GND.
Note 7:
Total OUT Voltage Error is the sum of offset voltage and gain errors. The output voltage is measured relative to the reference(REFOUT or REFIN).
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
Typical Operating Characteristics
(VCC = VRS+= 12V, VSENSE= 50mV for gain of 100V/V and 75mV for gain of 50V/V, TA = +25°C, unless otherwise noted.)
MAX4069
REFOUT vs. TEMPERATURE

MAX4069-72 toc09
TEMPERATURE (°C)
REFOUT (V)
REFOUT CONNECTED TO ADJ
SUPPLY CURRENT vs. TEMPERATURE

MAX4069-72 toc08
TEMPERATURE (°C)
SUPPLY CURRENT (
AV = 50V/V
VCC = 24V
VCC = 12V
SUPPLY CURRENT vs. SUPPLY VOLTAGE

MAX4069-72 toc07
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (204681214161018
AV = 100V/V
MAX4071
MAX4070
MAX4069
MAX4072
TOTAL ERROR vs. TEMPERATURE

MAX4069-72 toc06
TEMPERATURE (°C)
TOTAL ERROR (%)
VSENSE = 50mV
AV = 100V/V
VCC = 24V
VCC = 12V
TOTAL ERROR vs. SUPPLY VOLTAGE
(VSENSE = 3mV)

MAX4069-72 toc05
SUPPLY VOLTAGE (V)
TOTAL ERROR (%)14610
AV = 100V/V
AV = 50V/V
TOTAL ERROR vs. SUPPLY VOLTAGE

MAX4069-72 toc04
SUPPLY VOLTAGE (V)
TOTAL ERROR (%)20161881012146
VSENSE = 75mV
AV = 50V/V
VSENSE = 50mV
AV = 100V/V
(VOUT - VREF) vs. VSENSE

VSENSE (V)
OUT
- V
REF
) (V)
AV = 100V/V
AV = 50V/V
INPUT OFFSET VOLTAGE
vs. TEMPERATURE

MAX4069-72 toc02
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (
AV = 100V/V
INPUT OFFSET VOLTAGE DISTRIBUTION

MAX4069-72 toc01
VOS (μV)
PERCENTAGE OF UNITS (%)
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Referenceypical Operating Characteristics (continued)
(VCC = VRS+= 12V, VSENSE= 50mV for gain of 100V/V and 75mV for gain of 50V/V, TA = +25°C, unless otherwise noted.)
PSRR AND CMRR vs. FREQUENCY
MAX4069-72 toc18
FREQUENCY (Hz)
PSRR AND CMRR (dB)-100
CMRR
PSRR
SMALL-SIGNAL GAIN
vs. FREQUENCY

MAX4069-72 toc17
FREQUENCY (kHz)
GAIN (dB)
AV = 50V/V
AV = 100V/V
VOL vs. TEMPERATURE

MAX4069-72 toc16
TEMPERATURE (°C)
(mV)
IL = 500μA
IL = 10μA
VOH vs. TEMPERATURE

MAX4069-72 toc15
TEMPERATURE (°C)
(mV)
VOH = VCC - VOUT
IL = 500μA
IL = 10μA
MAX4071
REFOUT vs. SUPPLY VOLTAGE

MAX4069-72 toc14
SUPPLY VOLTAGE (V)
REFOUT (V)14106
MAX4070
REFOUT vs. SUPPLY VOLTAGE
MAX4069-72 toc13
SUPPLY VOLTAGE (V)
REFOUT (V)201618681012144
MAX4069
REFOUT vs. SUPPLY VOLTAGE
MAX4069-72 toc12
SUPPLY VOLTAGE (V)
REFOUT (V)201618681012144
MAX4071
REFOUT vs. TEMPERATURE
MAX4069-72 toc11
TEMPERATURE (°C)
REFOUT (V)
MAX4070
REFOUT vs. TEMPERATURE
MAX4069-72 toc10
TEMPERATURE (°C)
REFOUT (V)
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Referenceypical Operating Characteristics (continued)
(VCC = VRS+= 12V, VSENSE= 50mV for gain of 100V/V and 75mV for gain of 50V/V, TA = +25°C, unless otherwise noted.)
EXITING SHUTDOWN

MAX4069-72 toc24
100μs/div
VREFOUT
2V/div
VOUT
2V/div
VSHDN
5V/div
STARTUP DELAY

MAX4069-72 toc23
20μs/div
VREFOUT
5V/div
VOUT
5V/div
VCC
10V/div
LARGE-SIGNAL TRANSIENT RESPONSE

MAX4069-72 toc22
100μs/div
OUTPUT
2V/div
INPUT
20mV/div
GAIN = 100
REF
LARGE-SIGNAL TRANSIENT RESPONSE

MAX4069-72 toc21
100μs/div
OUTPUT
2V/div
INPUT
50mV/div
GAIN = 50
REF
SMALL-SIGNAL TRANSIENT RESPONSE

MAX4069-72 toc20
100μs/div
OUTPUT
500mV/div
REF
INPUT
5mV/div
GAIN = 100
SMALL-SIGNAL TRANSIENT RESPONSE

MAX4069-72 toc19
100μs/div
OUTPUT
200mV/div
REF
INPUT
5mV/div
GAIN = 50
MAX4069–MAX4072
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference

MAX4069RS+
RS-
GSEL
SHDN
2.7V TO 24V
VCC
OUTTO ADC
SHUTDOWN
GAIN SELECT
RSENSE
LOAD
FROM BATTERY
CHARGER
REFOUTOA
ADJ
GND
VREF
1.23V
CSA
Functional Diagram
Pin Description
PIN
MAX4069MAX4070/
MAX4071MAX4072
NAMEFUNCTION
1SHDNShutdown Input. Drive SHDN low to select shutdown mode. Connect SHDNto VCC for normal operation.22RS-Negative Connection to the External Sense Resistor33RS+Positive Connection to the External Sense Resistor4——N.C.No Connection. Not internally connected.44GNDGround. For thin QFN packages, also make an external connection fromGND to the under-side exposed paddle.——ADJAdjustable Output Voltage Feedback Input. Connect a resistor-dividerbetween REFOUT, ADJ, and GND (MAX4069 only, see Functional Diagram).5—REFOUTReference Output Voltage (MAX4069/MAX4070/MAX4071)66OUTVoltage Output. The difference voltage, VOUT - VREF, is proportional tothe voltage difference between RS+ and RS- and indicates the correctpolarity.7VCCSupply Voltage Input. Bypass VCC to GND with a 0.1µF capacitor.88GSELGain-Setting Input. Connect GSEL low to select gain = 50V/V, or connectGSEL high to select gain = 100V/V.—5REFINReference Input Voltage (MAX4072)
MAX4069–MAX4072
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