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PDF MAX4376TASA Data sheet ( Hoja de datos )
| Número de pieza | MAX4376TASA | |
| Descripción | Single/Dual/Quad High-Side Current-Sense Amplifiers with Internal Gain | |
| Fabricantes | Maxim Integrated | |
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19-1781; Rev 2; 10/00
Single/Dual/Quad High-Side Current-Sense
Amplifiers with Internal Gain
General Description
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:
GAIN
SUFFIX
20 T
50 F
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
Notebook 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
Features
o Low-Cost Single/Dual/Quad High-Side Current-
Sense Amplifiers
o ±0.5% Typical Full-Scale Accuracy
o +3V to +28V Supply Operation
o Adjustable Current-Sense Capability with External
Sense Resistor
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 Full 0 to 28V Common-Mode Range, Independent
of Supply Voltage
o Three Gain Versions Available
+20V/V (MAX437_T)
+50V/V (MAX437_F)
+100V/V (MAX437_H)
o Available in Space-Saving 5-pin SOT23 (Single),
8-pin µMAX (Dual), and 14-pin TSSOP (Quad)
Ordering Information
PART
GAIN
(+V/+V)
TEMP.
RANGE
PIN-
TOP
PACKAGE MARK
MAX4376TAUK-T
MAX4376FAUK-T
MAX4376HAUK-T
MAX4376TASA
MAX4376FASA
MAX4376HASA
20
50
100
20
50
100
-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
5 SOT23-5
5 SOT23-5
5 SOT23-5
8 SO
8 SO
8 SO
ADOG
ADOH
ADOI
—
—
—
Ordering Information continued at end of data sheet.
TOP VIEW
Pin Configurations
OUT 1
5 RS-
MAX4376
GND 2
VCC 3
4 RS+
SOT23
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
Single/Dual/Quad High-Side Current-Sense
Amplifiers with Internal Gain
Typical Operating Characteristics (continued)
(VCC = VRS+ = 12V, VSENSE = 100mV, TA = +25°C.)
TOTAL OUTPUT ERROR
vs. FULL-SCALE SENSE VOLTAGE
5
4
3
MAX4376T
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV TO 100mV)
IN
(5mV/div)
CL = 15pF
RL =1kΩ
100mV
95mV
2
1 MAX4376F
MAX4376H
0
-1 MAX4376T
OUT
(50mV/div)
2.0V
1.9V
-2
0
50 100 150
VSENSE (mV)
200
2µs/div
MAX4376F
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV TO 100mV)
IN
(5mV/div)
CL = 15pF
RL = 2.5kΩ
100mV
95mV
MAX4376H
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV to 100mV)
IN
(5mV/div)
CL = 15pF
RL = 5kΩ
100mV
95mV
OUT
(100mV/div)
5V
4.75V
2µs/div
MAX4376T
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)
IN
(45mV/div)
CL = 15pF
RL = 1kΩ
100mV
6mV
2V
OUT
(500mV/div)
0.120V
OUT
(200mV/div)
10V
9.5V
2µs/div
MAX4376F
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)
CL = 15pF
RL = 2.5kΩ
IN
(45mV/div)
100mV
6mV
OUT
(2V/div)
5V
0.3V
2µs/div
2µs/div
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MAX4376TASA.PDF ] | |
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