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PDF MAX4173FESA Data sheet ( Hoja de datos )
| Número de pieza | MAX4173FESA | |
| Descripción | Low-Cost / SOT23 / Voltage-Output / High-Side Current-Sense Amplifier | |
| Fabricantes | Maxim Integrated | |
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19-1434; Rev 1; 5/99
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
General Description
The MAX4173 low-cost, precision, high-side current-
sense amplifier is available in a tiny SOT23-6 package.
It features a voltage output that eliminates the need for
gain-setting resistors and it is ideal for today’s notebook
computers, cell phones, and other systems where cur-
rent monitoring is critical. High-side current monitoring
is especially useful in battery-powered systems, since it
does not interfere with the ground path of the battery
charger. The input common-mode range of 0 to +28V is
independent of the supply voltage and ensures that the
current-sense feedback remains viable even when con-
nected to a battery in deep discharge. The MAX4173’s
wide 1.7MHz bandwidth makes it suitable for use inside
battery charger control loops.
The combination of three gain versions and a user-
selectable external sense resistor sets the full-scale
current reading. This feature offers a high level of inte-
gration, resulting in a simple and compact current-
sense solution.
The MAX4173 operates from a single +3V to +28V sup-
ply, typically draws only 420µA of supply current over
the extended operating temperature range (-40°C to
+85°C), and is offered in the space-saving SOT23-6
package.
Applications
Notebook Computers
Portable/Battery-Powered Systems
Smart Battery Packs/Chargers
Cell Phones
Power-Management Systems
General System/Board-Level Current Monitoring
PA Bias Control
Precision Current Sources
Features
o Low-Cost, Compact Current-Sense Solution
o Wide 0 to +28V Common-Mode Range
Independent of Supply Voltage
o Three Gain Versions Available
+20V/V (MAX4173T)
+50V/V (MAX4173F)
+100V/V (MAX4173H)
o ±0.5% Full-Scale Accuracy
o 420µA Supply Current
o Wide 1.7MHz Bandwidth (MAX4173T)
o +3V to +28V Operating Supply
o Available in Space-Saving SOT23-6 Package
Typical Operating Circuit
0 TO +28V
VSENSE
+3V TO +28V
0.1µF
RSENSE
RS+ RS-
VCC
MAX4173T/F/H
A/D
CONVERTER
OUT
GND
ILOAD
LOAD/
BATTERY
PART
GAIN (V/V)
MAX4173TEUT-T
MAX4173TESA
MAX4173FEUT-T
MAX4173FESA
MAX4173HEUT-T
MAX4173HESA
20
20
50
50
100
100
Pin Configurations appear at end of data sheet.
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Ordering Information
PIN-PACKAGE
6 SOT23-6
8 SO
6 SOT23-6
8 SO
6 SOT23-6
8 SO
SOT TOP MARK
AABN
–
AABD
–
AABP
–
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1 page  
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Typical Operating Characteristics (continued)
(VCC = +12V, VRS+ = +12V, VSENSE = +100mV, TA = +25°C, unless otherwise noted.)
TOTAL OUTPUT ERROR
vs. TEMPERATURE
2.0
1.5
1.0
MAX4173H
0.5 MAX4173T
MAX4173T
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)
CL = 5pF
IN
(45mV/div)
100mV
6mV
0 2V
-0.5
MAX4173F
-1.0
OUT
(500mV/div)
-1.5 0.120V
-2.0
-50 -35 -20 -5 10 25 40 55 70 85
TEMPERATURE (°C)
MAX4173F
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)
2µs/div
MAX4173H
LARGE-SIGNAL TRANSIENT RESPONSE
(VSENSE = 6mV to 100mV)
CL = 5pF
CL = 5pF
IN
(45mV/div)
OUT
(2V/div)
100mV
6mV
5V
0.3V
IN
(45mV/div)
OUT
(3V/div)
100mV
6mV
10V
0.6V
2µs/div
IN
(5mV/div)
MAX4173T
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV TO 100mV)
CL = 5pF
100mV
95mV
2µs/div
MAX4173F
SMALL-SIGNAL TRANSIENT RESPONSE
(VSENSE = 95mV TO 100mV)
CL = 5pF
IN
(5mV/div)
100mV
95mV
OUT
(50mV/div)
2µs/div
2.0V
1.9V
OUT
(100mV/div)
2µs/div
5V
4.75V
_______________________________________________________________________________________ 5
5 Page 
Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Package Information (continued)
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX4173FESA.PDF ] | |
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