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DS2746G+T&R

Description
Battery Management 2-Wire Bat Monitor w/Ratiometric A/D IN
CategoryPower/power management    The power supply circuit   
File Size270KB,18 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric Compare View All

DS2746G+T&R Overview

Battery Management 2-Wire Bat Monitor w/Ratiometric A/D IN

DS2746G+T&R Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeDFN
package instructionHVSON, SOLCC10,.12,20
Contacts10
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time6 weeks
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeS-PDSO-N10
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals10
Maximum operating temperature70 °C
Minimum operating temperature-20 °C
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Encapsulate equivalent codeSOLCC10,.12,20
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
power supply3/5 V
Certification statusNot Qualified
Maximum seat height0.8 mm
Maximum supply voltage (Vsup)4.5 V
Minimum supply voltage (Vsup)2.5 V
Nominal supply voltage (Vsup)3.6 V
surface mountYES
Temperature levelOTHER
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3 mm
19-4632; 5/09
DS2746
Low-Cost 2-Wire Battery Monitor
with Ratiometric A/D Inputs
www.maxim-ic.com
GENERAL DESCRIPTION
The DS2746 provides system-side battery capacity
monitoring in cost-sensitive applications. Voltage,
bidirectional current, and accumulated current
measurement data is provided to the host processor
over a 2-wire interface. Offset bias and offset
blanking features greatly enhance the accuracy of
the coulomb counter. In addition, the DS2746 has
two auxiliary A/D inputs to sample the pack
identification resistor, thermistor, or other voltage
source. The results are reported as a ratiometric
fraction of the supply voltage eliminating error related
to the supply. The DS2746 reduces the total power
consumption of the measurement circuit by enabling
the resistor dividers, through the V
OUT
pin, only while
measurements are made. When the system is
inactive, a low power sleep mode reduces current
consumption while maintaining the coulomb count.
The tiny 3mm × 3mm TDFN package consumes only
9mm
2
of PCB space.
FEATURES
14-Bit Bidirectional Current Measurement
-
6.25V LSB, ±51.2mV Dynamic Range
-
416.7A LSB, ±3.4A Range (R
SNS
= 15m)
Current Accumulation Register Resolution
-
6.25Vhr LSB, 409.6mVh Range
-
417Ahr LSB, 27.31Ah Range
11-Bit Battery Voltage Measurement
-
2.44mV LSB, 0V to 4.5V Input Range
-
±10mV Accuracy at 3.6V Input
Two 11-Bit Aux Input Voltage Measurements
-
Ratiometric Inputs Eliminate Supply Error
-
VOUT drives Dividers, Reduces Power
-
±8 LSB Accuracy
Low Power Consumption:
-
Active Current: 70A typical, 100A max
-
Sleep Current: 1A typical, 3A max
ORDERING INFORMATION
APPLICATIONS
2.5G/3G Wireless Handsets
PDA/Smartphones
Digital Still and Video Cameras
Handheld Computers and Terminals
PART
DS2746G+
DS2746G+T&R
TEMP RANGE
-20ºC to +70ºC
-20ºC to +70ºC
PIN-PACKAGE
10-Pin 3
mm×
3mm
TDFN
DS2746G+ in Tape-
and-Reel
+ Denotes lead(Pb)-free/RoHS-compliant package.
PIN CONFIGURATION
TYPICAL OPERATING CIRCUIT
TOP VIEW
3mm
×
3mm TDFN
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here:
www.maxim-ic.com/errata.
1 of 17

DS2746G+T&R Related Products

DS2746G+T&R DS2746G+
Description Battery Management 2-Wire Bat Monitor w/Ratiometric A/D IN Battery Management 2-Wire Bat Monitor w/Ratiometric A/D IN
Is it lead-free? Lead free Lead free
Is it Rohs certified? conform to conform to
Parts packaging code DFN DFN
package instruction HVSON, SOLCC10,.12,20 HVSON, SOLCC10,.12,20
Contacts 10 10
Reach Compliance Code compliant compliant
ECCN code EAR99 EAR99
Factory Lead Time 6 weeks 6 weeks
Adjustable threshold NO NO
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code S-PDSO-N10 S-PDSO-N10
JESD-609 code e3 e3
length 3 mm 3 mm
Humidity sensitivity level 1 1
Number of channels 1 1
Number of functions 1 1
Number of terminals 10 10
Maximum operating temperature 70 °C 70 °C
Minimum operating temperature -20 °C -20 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HVSON
Encapsulate equivalent code SOLCC10,.12,20 SOLCC10,.12,20
Package shape SQUARE SQUARE
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) 260 260
power supply 3/5 V 3/5 V
Certification status Not Qualified Not Qualified
Maximum seat height 0.8 mm 0.8 mm
Maximum supply voltage (Vsup) 4.5 V 4.5 V
Minimum supply voltage (Vsup) 2.5 V 2.5 V
Nominal supply voltage (Vsup) 3.6 V 3.6 V
surface mount YES YES
Temperature level OTHER OTHER
Terminal surface Matte Tin (Sn) Matte Tin (Sn)
Terminal form NO LEAD NO LEAD
Terminal pitch 0.5 mm 0.5 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED
width 3 mm 3 mm
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