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DS2786G+T&R

Li-Ion, Li-Pol Battery Fuel Gauge IC, 2.5 V to 4.5 V supply, Serial interface, TDFN-10

ANALOG DEVICES DS2786G+T&R
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Manufacturer Part No:
DS2786G+T&R
Order Code:
2517242RL
Technical Datasheet:
DS2786G+T&R   Datasheet
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Product Overview

The DS2786G+T&R is a stand-alone OCV based fuel gauge in 10 pin TDFN package. This device estimates available capacity for rechargeable Li-ion (Li+) and Li+ polymer batteries based on the cell voltage in the open-circuit state following a relaxation period. The open-circuit voltage (OCV) is used to determine relative cell capacity based on a lookup table stored in the IC. This capability makes accurate capacity information available immediately after a battery pack is inserted. The DS2786B uses coulomb counting as a secondary means of estimating relative capacity, remaining capacity is reported in percent along with cell voltage, current and temperature information. Cell characteristics and calculations are stored in on-chip EEPROM. Temperature data is available from an on-die sensor, resistance measurements of a pack identification resistor and pack thermistor are supported by ratiometric measurements on two auxiliary inputs.
  • Supply voltage range is 2.5V to 4.5V
  • Operating temperature range from -20°C to 70°C
  • Measurement and estimated capacity data are accessed through an I2C interface
  • Relative capacity calculated from coulomb counter and open-circuit cell voltage (OCV) battery model
  • Accurate warning on low battery conditions, low power consumption
  • 12bit battery voltage measurement with ±10mV accuracy, 1.22mV LSB (0V to 4.5V) input range
  • 11bit bidirectional current measurement with 25µV LSB ±51.2mV dynamic range, 1.67mA LSB at ±3.4A
  • Current accumulation measurement resolution ±204.8mVh and ±13.65Ah (RSNS = 15mohm) range
  • Internal temperature measurement of 0.125°C LSB, ±3°C accuracy

Applications

Multimedia, Portable Devices, Imaging, Video & Vision, Audio

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Product Information

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:
Fuel Gauge

:
Li-Ion, Li-Pol

:
2.5V

:
4.5V

:
TDFN

:
TDFN

:
10Pins

:
Serial

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-20°C

:
Serial

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70°C

:
-

:
MSL 1 - Unlimited

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Technical Documents (1)

CAD Downloads

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Terms and Conditions

CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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642 AU stock available for 1-2 business days delivery
2,796 UK stock available for 5-8 business days delivery

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$3.76 ( $4.14  Inc. GST)

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