MAX4376FASA-T Maxim Integrated, MAX4376FASA-T Datasheet

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MAX4376FASA-T

Manufacturer Part Number
MAX4376FASA-T
Description
Current Sense Amplifiers High-Side Current-Sense Amp
Manufacturer
Maxim Integrated
Series
MAX4376, MAX4377, MAX4378r
Datasheet
The 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:
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
respectively.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Notebook Computers
Current-Limited Power
Supplies
Fuel Gauges in PC
General-System/Board-
Level Current Monitoring
Battery Chargers
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
Single/Dual/Quad, High-Side Current-Sense
GAIN
100
20
50
®
and 14-pin TSSOP packages,
General Description
Portable/Battery-Powered
Systems
Cell Phones
Smart Battery Packages
Automotive Current Detect
Power Management
Systems
PA Bias Control
SUFFIX
T
F
H
Applications
Amplifiers with Internal Gain
o Low-Cost, Single/Dual/Quad, High-Side Current-
o ±0.5% Typical Full-Scale Accuracy
o +3V to +28V Supply Operation
o Adjustable Current-Sense Capability with External
o Buffered Output Voltage with 2mA Drive
o 1mA (typ) Supply Current
o 2.0MHz Bandwidth (Gain = +20V/V)
o Automotive Temperature Range (-40°C to +125°C)
o High Accuracy +2V to +28V Common-Mode
o Three Gain Versions Available
o Available in Space-Saving 5-Pin SOT23 (Single),
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 T AUK+T
MAX4376TAUK/V+T
MAX4376FAUK+T
MAX4376HAUK+T
M AX 4376H A U K/V + T
MAX4376TASA+
MAX4376FASA+
MAX4376HASA+
Pin Configurations continued at end of data sheet.
Sense Amplifiers
Sense Resistor
Range, Functional Down to 0V, Independent of
Supply Voltage
8-Pin µMAX (Dual), and 14-Pin TSSOP (Quad)
+20V/V (MAX437_T)
+50V/V (MAX437_F)
+100V/V (MAX437_H)
PART
MAX4376/MAX4377/
TOP VIEW
(+V/V)
GND
GAIN
OUT
V
100
100
100
CC
20
20
50
20
50
1
2
3
Ordering Information
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
+
MAX4376
SOT23
Pin Configurations
RANGE
TEMP
MAX4378
5 RS-
4
RS+
PIN-
PACKAGE
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
8 SO
8 SO
8 SO
19-1781; Rev 7; 10/12
Features
ADOG
ADOH
AFGO
MARK
ADOI
TOP

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MAX4376FASA-T Summary of contents

Page 1

... TSSOP (Quad) GAIN PART (+V/V) MAX4376 T AUK+T 20 MAX4376TAUK/V+T 20 MAX4376FAUK+T 50 MAX4376HAUK+T 100 M AX 4376H 100 MAX4376TASA+ 20 MAX4376FASA+ 50 MAX4376HASA+ 100 Ordering Information continued at end of data sheet. + Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part Tape and reel. TOP VIEW OUT 1 GND Pin Configurations continued at end of data sheet ...

Page 2

... CC 0 -400 0 -800 150 = 100mV, = 12V RS+ = 100mV, ±0.5 = +25° 100mV, = 28V RS+ = 100mV, = 28V, ±0.5 RS+ = 100mV, ±9 = 0.1V RS+ = 6.25mV, ±7 = 12V RS+ = 28V 0.9 RS+ = 12V, 25 MAX UNITS 2.2 mA µ µA 120 120 mV ±6.75 ±3.25 ±11 % ±5 ±32 1 Maxim Integrated ...

Page 3

... Note 1: All devices are 100% production tested at T 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: V such that saturation. SENSE OUT Maxim Integrated MAX4376/MAX4377/MAX4378 Amplifiers with Internal Gain ) = 0V +3.0V to +28V ...

Page 4

... MAX4376H -0.6 -0.8 -1.0 75 100 125 SUPPLY VOLTAGE (V) TOTAL OUTPUT ERROR vs. COMMON-MODE VOLTAGE 1.0 0.8 0.6 0.4 MAX4376H 0.2 0 -0.2 -0.4 MAX4376F -0.6 MAX4376T -0.8 -1 COMMON-MODE VOLTAGE (V) TOTAL OUTPUT ERROR vs. TEMPERATURE 1.0 0.8 0.6 MAX4376F 0.4 MAX4376T 0.2 0 -0.2 MAX4376H -0.4 -0.6 -0.8 -1.0 -50 - 100 125 150 TEMPERATURE (°C) = 100mV) SENSE MAX4376T Maxim Integrated ...

Page 5

... MAX4376T LARGE-SIGNAL TRANSIENT RESPONSE (V = 6mV to 100mV) SENSE C = 15pF 1kΩ 45mV/div OUT 500mV/div 2µs/div Maxim Integrated MAX4376/MAX4377/MAX4378 Amplifiers with Internal Gain Typical Operating Characteristics (continued) = +25°C 5mV/div MAX4376H OUT 50mV/div 150 200 100mV 95mV 5mV/div 5V OUT 200mV/div 4 ...

Page 6

... FREQUENCY (Hz) OUTPUT LOW vs. TEMPERATURE 400 350 300 250 MAX4376T 200 MAX4376F 150 100 MAX4376H 50 0 -50 - 100 125 TEMPERATURE (°C) Pin Description FUNCTION is proportional to the magnitude of OUT_ - approximately RS+ RS- OUT_ > V (no phase reversal Maxim Integrated ...

Page 7

... GAIN = 50 for MAX437_F. GAIN = 100 for MAX437_H. Set the full-scale output range by selecting R the appropriate gain version of the MAX4376/ MAX4377/MAX4378. Maxim Integrated MAX4376/MAX4377/MAX4378 Amplifiers with Internal Gain The MAX4376/MAX4377/MAX4378 sense a wide variety of currents with different sense resistor values. Table 1 lists common resistor values for typical operation of the MAX4376/MAX4377/MAX4378 ...

Page 8

... TO LOAD BATTERY BATTERY MAX4376 V OUT OUT Figure 2. Bidirectional Current Monitor FULL-SCALE OUTPUT VOLTAGE (FULL-SCALE V SENSE V OUT 20 2.0 50 5.0 10.0 20 2.0 50 5.0 10.0 20 2.0 50 5.0 10.0 20 2.0 50 5.0 10.0 R SENSE +3V TO +28V V CC RS1+ RS1- MAX4377 RS2- RS2+ = 100mV), (V) SYSTEM AND CHARGER OUT1 OUT2 Maxim Integrated ...

Page 9

... MAX4378HAUD+ 100 -40°C to +125°C MAX4378TASD+ 20 -40°C to +125°C MAX4378FASD+ 50 -40°C to +125°C MAX4378HASD+ 100 -40°C to +125°C + Denotes a lead(Pb)-free/RoHS-compliant package. Maxim Integrated MAX4376/MAX4377/MAX4378 Amplifiers with Internal Gain I LOAD PROCESS: BiCMOS SENSE RS- LOAD/ BATTERY + 8 RS+ OUT1 ...

Page 10

... RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 5 SOT 8 SOIC 8 µMAX 14 SOIC 14 TSSOP 10 PACKAGE CODE OUTLINE NO. U5+1 21-0057 S8+2 21-0041 U8+1 21-0036 S14+1 21-0041 U14+1 21-0066 Package Information LAND PATTERN NO. 90-0174 90-0096 90-0092 90-0096 90-0117 Maxim Integrated ...

Page 11

... Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...

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