MAX4376FAUK+T ,Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal GainFeaturesThe MAX4376/MAX4377/MAX4378 single, dual, and ♦ Low-Cost, Single/Dual/Quad, High-Side Curre ..
MAX4376FAUK-T ,Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal GainApplicationsOUT15 RS-Notebook Computers Portable/Battery-PoweredSystemsMAX4376Current-Limited Power ..
MAX4376HAUK/V+T ,Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal GainApplicationsTOP VIEW+Notebook Computers Portable/Battery-PoweredOUT1 5 RS-SystemsCurrent-Limited Po ..
MAX4376HAUK+ ,Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal GainELECTRICAL CHARACTERISTICS(V = 0 to 28V, V = (V - V ) = 0V, V = +3.0V to +28V, R = ∞, T = T to T un ..
MAX4376HAUK+T ,Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal Gain MAX4376/MAX4377/MAX4378Single/Dual/Quad, High-Side Current-SenseAmplifiers with Internal Gain
MAX4376TASA ,Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal GainApplicationsOUT15 RS-Notebook Computers Portable/Battery-PoweredSystemsMAX4376Current-Limited Power ..
MAX8211IPA ,Microprocessor Voltage Monitors with Programmable Voltage DetectionGeneral Description ________
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MAX8211MTV/883B ,Microprocessor Voltage Monitors with Programmable Voltage DetectionELECTRICAL CHARACTERISTICS(V+ = 5V, T = +25°C, unless otherwise noted.)AMAX8211 MAX8212PARAMETER SY ..
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MAX8212CSA ,Microprocessor Voltage Monitors with Programmable Voltage Detectionapplications.The use of CMOS technology has several advantages.The quiescent supply current is much ..
MAX4376FASA+-MAX4376FASA+T-MAX4376FAUK-MAX4376FAUK+T-MAX4376HAUK/V+T-MAX4376HAUK+-MAX4376HAUK+T-MAX4376TASA+-MAX4376TAUK+-MAX4376TAUK+T-MAX4377FASA+-MAX4377FAUA+T-MAX4377HAUA+-MAX4377TASA+-MAX4377TASA+T-MAX4377TAUA+-MAX4378FASD+-MAX4378HAUD+-MAX4378TASD+-MAX4378TASD+
Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal Gain
MAX4376/MAX4377/
MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal GainGND
OUT
RS+VCC5RS-
MAX43762
TOP VIEW
SOT23
General DescriptionThe MAX4376/MAX4377/MAX4378 single, dual, and
quad precision high-side current-sense amplifiers are
available in space-saving packages. They feature
buffered voltage outputs that eliminate the need for
gain-setting resistors and are ideal for today’s notebook
computers, cell phones, and other systems where cur-
rent monitoring is critical. These precision devices are
offered in three fixed-gain versions of 20, 50, and 100:
GAINSUFFIXTF
100 H
For example, MAX4376TAUK is a single high-side
amplifier with a gain of 20.
High-side current monitoring is especially useful in bat-
tery-powered systems since it does not interfere with
the ground path of the battery charger. The input com-
mon-mode range of 0 to +28V is independent of the
supply voltage and ensures that the current-sense
feedback remains viable even when connected to a
battery pack in deep discharge.
The full-scale current reading can be set by choosing
the appropriate voltage gain and external-sense resis-
tor. This capability offers a high level of integration and
flexibility, resulting in a simple and compact current-
sense solution.
The MAX4376/MAX4377/MAX4378 operate over a sup-
ply voltage range of +3V to +28V, draw 1mA of supply
current per amplifier, and operate over the full automo-
tive temperature range of -40°C to +125°C. These
devices have a wide bandwidth of 2MHz, making them
suitable for use inside battery-charger control loops.
The buffered outputs drive up to 2mA of output current
into a ground-referenced load.
The MAX4376 is available in a tiny 5-pin SOT23 pack-
age. The MAX4377/MAX4378 are available in space-
saving 8-pin µMAX®and 14-pin TSSOP packages,
respectively.
Applications
FeaturesLow-Cost, Single/Dual/Quad, High-Side Current-
Sense Amplifiers±0.5% Typical Full-Scale Accuracy+3V to +28V Supply OperationAdjustable Current-Sense Capability with External
Sense ResistorBuffered Output Voltage with 2mA Drive1mA (typ) Supply Current 2.0MHz Bandwidth (Gain = +20V/V)Automotive Temperature Range (-40°C to +125°C)High Accuracy +2V to +28V Common-Mode
Range, Functional Down to 0V, Independent of
Supply VoltageThree Gain Versions Available
+20V/V (MAX437_T)
+50V/V (MAX437_F)
+100V/V (MAX437_H)Available in Space-Saving 5-Pin SOT23 (Single),
8-Pin µMAX (Dual), and 14-Pin TSSOP (Quad)
Ordering InformationNotebook Computers
Current-Limited Power
Supplies
Fuel Gauges in PC
General-System/Board-
Level Current Monitoring
Battery Chargers
Portable/Battery-Powered
Systems
Cell Phones
Smart Battery Packages
Automotive Current Detect
Power Management
Systems
PA Bias Control
Pin Configurations
PARTGAIN
(+V/V)
TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
MAX4376 T AUK+T20-40°C to +125°C5 SOT23ADOG
MAX4376TAUK/V+T20-40°C to +125°C5 SOT23—
MAX4376FAUK+T50-40°C to +125°C5 SOT23ADOH
MAX4376HAUK+T100-40°C to +125°C5 SOT23ADOIAX 4376H A U K/V + T 100-40°C to +125°C5 SOT23AFGO
MAX4376TASA+20-40°C to +125°C8 SO—
MAX4376FASA+50-40°C to +125°C8 SO—
MAX4376HASA+100-40°C to +125°C8 SO—
Ordering Information continued at end of data sheet.+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
T = Tape and reel.
MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VRS+= 0 to 28V, VSENSE= (VRS+- VRS-) = 0V, VCC= +3.0V to +28V, RL= ∞, 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 (VCC + 0.3V)
Differential Input Voltage (VRS+- VRS- ).................................±8V
Output Short Circuit to VCC........................................Continuous
Output Short Circuit to GND.....................................................1s
Current into Any Pin..........................................................±20mA
Continuous Power Dissipation (TA= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
8-Pin µMAX (derate 4.5mW/°C above +70°C).............362mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C).........727mW
Operating Temperature Range.........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow).......................................+260°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOperating Voltage RangeVCCGuaranteed by PSR test328V
Common-Mode Input RangeVCMGuaranteed by total OUT voltage error test028V
Common-Mode RejectionCMR2V ≤ VRS+ ≤ 28V, VSENSE = 100mV90dB
Supply Current per AmplifierICCVSENSE = 5mV, VRS+ > 2.0V, VCC = 12V12.2mA
Leakage CurrentIRS+, IRS-VCC = 0V, VRS+ = 28V8μA
VRS+ > 2.0V060IRS+VRS+ ≤ 2.0V-40060
VRS+ > 2.0V0120Input Bias Current
IRS-
VRS+ ≤ 2.0V-800120
Full-Scale Sense VoltageVSENSE150mV
VSENSE = 100mV,
VCC = 12V, VRS+ = 12V±6.75
VSENSE = 100mV,
VCC = 12V, TA = +25°C,
VRS+ = 12V
±0.5±3.25
VSENSE = 100mV,
VCC = 28V, VRS+ = 28V±11
VSENSE = 100mV,
VCC = 28V, VRS+ = 28V,
TA = +25°C
±0.5±5
VSENSE = 100mV,
VCC = 12V, VRS+ = 0.1V±9±32
Total OU T V ol tag e E r r or ( N ote 2) IOUT ≤ 2mA
VSENSE = 6.25mV,
VCC = 12V, VRS+ = 12V
(Note 3)
OUT High Voltage (Note 4)( VC C - V OUT) VCC = 3V, IOUT = 2mA, VRS+ = 28V0.91.2V
OUT Low VoltageVOLIOUT = 200µA, VCC = VRS+ = 12V,2540mV
MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
ELECTRICAL CHARACTERISTICS (continued)(VRS+= 0 to 28V, VSENSE= (VRS+- VRS-) = 0V, VCC= +3.0V to +28V, RL= ∞, TA= TMINto TMAX,unless otherwise noted. Typical
values are at TA= 25°C.) (Note 1)
Note 1:All devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2:Total OUT Voltage Error is the sum of gain and offset errors.
Note 3:6.25mV = 1/16 of 100mV full-scale sense voltage.
Note 4:VSENSEsuch that VOUTis in saturation.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSVSENSE = 100mV
(gain = +20V/V)2
VSENSE = 100mV
(gain = +50V/V)1.7
VSENSE = 100mV
(gain = +100V/V)1.2
BandwidthBW
VCC = 12V
VRS+ = 12V
CLOAD = 15pFS E NS E = 6.25m V (N ote 3) 0.5
MHz
Slew RateSRVSENSE = 20mV to 100mV, CLOAD = 15pF10V/µs
MAX437_T+20
MAX437_F+50GainAV
MAX437_H+100
V/V
TA = TM IN to TM AX±5.5VSENSE = 10mV to
150mV, VCC = 12V,
IOUT = 2mA, gain = 20
and 50, VRS+ = 12VTA = +25°C±0.5±2.5
TA = TM IN to TM AX5.5
Gain Accuracy∆AVS E N S E = 10m V to
150m V , V C C = 20V ,
IOU T = 2m A, g ai n = 100,R S + = 12V TA = +25°C±0.5±2.5
VSENSE = 6.25mV
to 100mV400
OUT Setting Time to 1% of Final
ValueC C = 12V , V RS + = 12V ,
CLOAD = 15pFVSENSE = 100mV
to 6.25mV800
Maximum Capacitive LoadCLOADNo sustained oscillation1000pF
Output ResistanceROUTVSENSE = 100mV5Ω
Power-Supply RejectionPSRVRS+ > 2V, VOUT = 1.6V, VCC = 3V to 28V6690dB
Power-Up Time to 1% of Final
ValueVSENSE = 100mV, CLOAD = 15pF2µs
Saturation Recovery Time to
1% of Final Value
VCC = 12V, VRS+ = 12V, CLOAD = 15pF,
VSENSE = 100mV1µs
Reverse Recovery Time to 1%
of Final Value
VCC = 12V, VRS_ = 12V, CLOAD = 15pF,
VSENSE = -100mV to +100mV1µs
MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal GainSUPPLY CURRENT (PER AMPLIFIER)
vs. SUPPLY VOLTAGE
MAX4376/7/8 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
MAX4376H
MAX4376FMAX4376F
MAX4376T
SUPPLY CURRENT (PER AMPLIFIER)
vs. TEMPERATURE
MAX4376/7/8 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
MAX4376T
MAX4376F
MAX4376H
TOTAL OUTPUT ERROR
vs. SUPPLY VOLTAGE (VSENSE = 100mV)
MAX4376/7/8 toc03
SUPPLY VOLTAGE (V)
TOTAL OUTPUT ERROR (%)MAX4376H
MAX4376T
MAX4376F
TOTAL OUTPUT ERROR
vs. SUPPLY VOLTAGE (VSENSE = 6.25mV)MAX4376/7/8 toc04
TOTAL OUTPUT ERROR (%)
SUPPLY VOLTAGE (V)
MAX4376H
MAX4376F
MAX4376T
TOTAL OUTPUT ERROR
vs. COMMON-MODE VOLTAGE
MAX4376/7/8 toc05
COMMON-MODE VOLTAGE (V)
TOTAL OUTPUT ERROR (%)
MAX4376T
MAX4376F
MAX4376H
GAIN ACCURACY
vs. TEMPERATURE
MAX4376/7/8 toc06
GAIN ACCURACY (%)
MAX4376HMAX4376F
MAX4376T
Typical Operating Characteristics
(VCC= VRS+ = 12V, VSENSE = 100mV, TA= +25°C.)
TOTAL OUTPUT ERROR
vs. TEMPERATURE
MAX4376/7/8 toc07
TOTAL OUTPUT ERROR (%)
MAX4376H
MAX4376T
MAX4376F
MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
Typical Operating Characteristics (continued)(VCC= VRS+ = 12V, VSENSE = 100mV, TA= +25°C.)
2μs/div
MAX4376F
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV TO 100mV)5mV/div
OUT
100mV/div
95mV
100mV
4.75V
MAX4376 toc10
CL = 15pF
RL = 2.5kΩ
2μs/div
MAX4376H
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV to 100mV)5mV/div
OUT
200mV/div
95mV
100mV
10V
9.5V
MAX4376 toc11
CL = 15pF
RL = 5kΩ
MAX4376T
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)45mV/div
OUT
500mV/div
6mV
100mV
0.120V
MAX4376 toc12
CL = 15pF
RL = 1kΩ
TOTAL OUTPUT ERROR
vs. FULL-SCALE SENSE VOLTAGEMAX4376/7/8 toc08
VSENSE (mV)
TOTAL OUTPUT ERROR (%)50100150200
MAX4376FMAX4376H
MAX4376T
2μs/div
MAX4376T
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV TO 100mV)5mV/div
OUT
50mV/div
95mV
100mV
2.0V
1.9V
MAX4376 toc09
CL = 15pF
RL =1kΩ
MAX4376F
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)45mV/div
OUT
2V/div
6mV
100mV
0.3V
MAX4376 toc13
CL = 15pF
RL = 2.5kΩ
MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
Pin Description
PIN
MAX4376MAX4376MAX4377MAX4378SOT23-5SO-8µMAX-8/
SO-8
SO-14/
TSSOP-14
NAMEFUNCTION41, 71, 7, 8, 14OUT, OUT_
Output Voltage. VOUT_ is proportional to the magnitude of
the sense voltage (VRS+ - VRS-). VOUT_ is approximately
zero when VRS - > VRS - + (no phase reversal).3411GNDGround84VCCSupply Voltage83, 53, 5, 10, 12RS+, RS_+Power connection to the external sense resistor62, 62, 6, 9, 13 RS-, RS_-Load-side connection to the external sense resistor
2μs/div
MAX4376H
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)45mV/div
OUT
3V/div
6mV
100mV
10V
0.6V
MAX4376 toc14
CL = 15pF
RL = 5kΩ
1.E+041.E+071.E+061.E+05
SMALL-SIGNAL GAIN
vs. FREQUENCYMAX4376/7/8 toc15
FREQUENCY (Hz)
GAIN (dB)
MAX4376T
MAX4376F
MAX4376H
TIME (500ns)
OVERDRIVE RESPONSE
AV = +20V/V200mV/div
OUT
2V/div
350mV
750mV
VOH
MAX4376/7/8 toc16
OUTPUT LOW
vs. TEMPERATURE
MAX4376/7/8 toc17
TEMPERATURE (°C)
OUTPUT LOW (mV)
MAX4376H
MAX4376F
MAX4376T
Typical Operating Characteristics (continued)(VCC= VRS+ = 12V, VSENSE = 100mV, TA= +25°C.)
