MAX4376 Maxim, MAX4376 Datasheet

no-image

MAX4376

Manufacturer Part Number
MAX4376
Description
The MAX4376/MAX4377/MAX4378 single, dual, and quad precision high-side current-sense amplifiers are available in space-saving packages
Manufacturer
Maxim
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX4376FASA
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4376FAUK
Manufacturer:
maxim
Quantity:
5 321
Part Number:
MAX4376FAUK
Manufacturer:
MAX
Quantity:
20 000
Part Number:
MAX4376FAUK+
Manufacturer:
MAXIM
Quantity:
163
Part Number:
MAX4376FAUK+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
MAX4376FAUK+T
Quantity:
1 003
Part Number:
MAX4376HASA
Quantity:
3 411
Part Number:
MAX4376HASA+T
Manufacturer:
MAXIM
Quantity:
9
Part Number:
MAX4376HAUK+
Manufacturer:
Maxim
Quantity:
70
Part Number:
MAX4376HAUK+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
MAX4376HAUK+T
Quantity:
20
Part Number:
MAX4376TAUK
Manufacturer:
MAXIM/美信
Quantity:
20 000
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.
19-1781; Rev 6; 2/11
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.maxim-ic.com.
Single/Dual/Quad, High-Side Current-Sense
GAIN
100
20
50
________________________________________________________________ Maxim Integrated Products
®
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.
T = Tape and reel.
Pin Configurations continued at end of data sheet.
MAX4376 T AUK+T
MAX4376FAUK+T
MAX4376HAUK+T
M AX 4376H A U K/V + T
MAX4376TASA+
MAX4376FASA+
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
TOP VIEW
GND
OUT
V
CC
(+V/V)
GAIN
100
100
20
50
20
50
1
2
3
Ordering Information
+
MAX4376
-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
SOT23
Pin Configurations
RANGE
TEMP
5
4
RS-
RS+
PIN-
PACKAGE
5 SOT23
5 SOT23
5 SOT23
5 SOT23
8 SO
8 SO
Features
ADOG
ADOH
MARK
AFGO
ADOI
TOP
1

Related parts for MAX4376

MAX4376 Summary of contents

Page 1

... 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 ...

Page 2

... 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 ...

Page 3

... A PARAMETER SYMBOL Bandwidth Slew Rate Gain Gain Accuracy OUT Setting Time Final Value Maximum Capacitive Load C Output Resistance Power-Supply Rejection Power-Up Time Final Value Saturation Recovery Time Final Value Reverse Recovery Time Final Value Note 1: All devices are 100% production tested at T Note 2: Total OUT Voltage Error is the sum of gain and offset errors ...

Page 4

... TEMPERATURE (°C) = 6.25mV) SENSE MAX4376H MAX4376F 50 75 100 125 TOTAL OUTPUT ERROR vs. SUPPLY VOLTAGE (V SENSE 1.2 1.0 0.8 MAX4376T 0.6 MAX4376F 0.4 0.2 0.0 -0.2 -0.4 MAX4376H -0.6 -0.8 -1.0 100 125 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 ...

Page 5

... A IN 5mV/div MAX4376H OUT 50mV/div 150 200 100mV IN 95mV 5mV/div 5V OUT 200mV/div 4.75V 100mV IN 45mV/div 6mV 2V OUT 2V/div 0.120V MAX4376T SMALL-SIGNAL TRANSIENT RESPONSE (V = 95mV TO 100mV) SENSE C = 15pF L R =1kΩ L 100mV 95mV 2.0V 1.9V 2µs/div MAX4376H SMALL-SIGNAL TRANSIENT RESPONSE (V = 95mV to 100mV) SENSE C = 15pF 5kΩ ...

Page 6

... 5kΩ 45mV/div OUT 3V/div 2µs/div OVERDRIVE RESPONSE AV = +20V/V IN 200mV/div OUT 2V/div TIME (500ns) 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued) = +25°C.) A 100mV 6mV 10V 0.6V MAX4376/7/8 toc16 750mV 350mV SMALL-SIGNAL GAIN vs. FREQUENCY 45 MAX4376H MAX4376F 25 MAX4376T 1.E+04 1.E+05 1.E+06 1.E+07 FREQUENCY (Hz) OUTPUT LOW vs ...

Page 7

... RS-, RS_- Load-side connection to the external sense resistor — N.C. No Connection. Not internally connected. Set the full-scale output range by selecting R the appropriate gain version of the MAX4376/ MAX4377/MAX4378. The MAX4376/MAX4377/MAX4378 sense a wide variety ). CC of currents with different sense resistor values. Table 1 lists common resistor values for typical operation of the ...

Page 8

... OUT MIRROR I RGD RGD GND Figure 1. Functional Diagram monitor. This is useful for implementing either smart battery packs or fuel gauges. Current Source Circuit Figure 3 shows a block diagram using the MAX4376 with a switching regulator to make a current source. 8 _______________________________________________________________________________________ GAIN (+V/V) (mΩ) SENSE 1000 20 50 ...

Page 9

... OUT1 1 14 OUT4 RS1 RS4- MAX4378 RS1 RS4 GND CC 10 RS3+ RS2 RS3- RS2 OUT3 OUT2 SO/TSSOP Typical Operating Circuit I V LOAD SENSE 0 TO +28V R SENSE RS+ RS- +3V TO +28V V CC 0.1µF MAX4376T/F/H A/D LOAD/ OUT BATTERY GND 9 ...

Page 10

... Amplifiers with Internal Gain For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status ...

Page 11

... Specified V Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 11 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

Related keywords