MAX4081 Maxim, MAX4081 Datasheet - Page 13

• Manufacturer Part Number: MAX4081
• Description: The MAX4080/MAX4081 are high-side, current-sense amplifiers with an input voltage range that extends from 4
• Manufacturer: Maxim

The bidirectional capability of the MAX4081 makes it an
excellent candidate for use in smart battery packs. In
the application diagram (Figure 5), the MAX4081 moni-
tors the charging current into the battery as well as the
discharge current out of the battery. The microcon-
troller stores this information, allowing the system to
query the battery's status as needed to make system
power-management decisions.
Figure 5. MAX4081 Used In Smart-Battery Application
MAX4080FAUA
MAX4080FASA
MAX4080TAUA
MAX4080TASA
MAX4080SAUA
MAX4080SASA
MAX4081FAUA
MAX4081FASA
MAX4081TAUA
MAX4081TASA
MAX4081SAUA
MAX4081SASA
MANAGEMENT
CIRCUITRY
CHARGER
76V, High-Side, Current-Sense Amplifiers with
SYSTEM
POWER
AND
PART
INTERFACE
SERIAL
______________________________________________________________________________________
V
GND
CC
RS+
GAIN (V/V)
MAX4081
R
SENSE
OUT
20
20
60
60
20
20
60
60
µC
5
5
5
5
Power Management
Selector Guide
RS-
REF1A
REF1B
Unidirectional
Unidirectional
Unidirectional
Unidirectional
Unidirectional
Unidirectional
Bidirectional
Bidirectional
Bidirectional
Bidirectional
Bidirectional
Bidirectional
1.8V
I
SENSE
BATTERY
For the latest package outline information and land patterns
(footprints), go to 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.
PROCESS: Bipolar
+ Denotes a lead(Pb)-free/RoHS-compliant package.
MAX4081FAUA+
MAX4081FASA+
MAX4081TAUA+
MAX4081TASA+
MAX4081SAUA+
MAX4081SASA+
PACKAGE
Ordering Information (continued)
8 µMAX
TYPE
V
8 SO
CC
= 4.5V TO 76V
PART
Typical Operating Circuit
PACKAGE
CODE
Voltage Output
U8+1
S8+2
Package 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
V
TEMP RANGE
CC
RS+
Chip Information
MAX4080
I
R
SENSE
SENSE
GND
OUTLINE
21-0036
21-0041
NO.
RS-
OUT
SYSTEM
PATTERN NO.
PIN-PACKAGE
8 µMAX
8 SO
8 µMAX
8 SO
8 µMAX
8 SO
LOAD
90-0092
90-0096
LAND
13