DS2762

PRODUCTION

High-Precision Li+ Battery Monitor with Alerts

1-Wire Battery Monitor Integrates Single-Cell Protector and Alerts System when Current or Temperature Exceeds User-Defined Limits

Data Sheet (Rev. 2) Product Selection Table
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Overview

  • Li+ Safety Circuit
    • Overvoltage Protection
    • Overcurrent/Short-Circuit Protection
    • Undervoltage Protection
  • Host Alerted When Accumulated Current or Temperature Exceeds User-Selectable Limits
  • 0V Battery Recovery Charge
  • Available in Two Configurations:
    • Internal 25mΩ Sense Resistor
    • External User-Selectable Sense Resistor
  • Current Measurement
    • 12-Bit Bidirectional Measurement
    • Internal Sense Resistor Configuration: 0.625mA LSB and ±1.9A Dynamic Range
    • External Sense Resistor Configuration: 15.625µV LSB and ±64mV Dynamic Range
  • Current Accumulation:
    • Internal Sense Resistor: 0.25mAhr LSB
    • External Sense Resistor: 6.25µVhr LSB
  • Voltage Measurement with 4.88mV Resolution
  • Temperature Measurement Using Integrated Sensor with 0.125°C Resolution
  • System Power Management and Control Feature Support
  • 32 Bytes of Lockable EEPROM
  • 16 Bytes of General-Purpose SRAM
  • Dallas 1-Wire® Interface with Unique 64-Bit Device Address
  • Low-Power Consumption:
    • Active Current: 60µA typ, 90µA max
    • Sleep Current: 1µA typ, 2µA max
DS2762
High-Precision Li+ Battery Monitor with Alerts
DS2762 high-precision Li+ battery monitor is a data-acquisition, information-storage, and safety-protection device tailored for cost-sensitive battery pack applications | Pin Configurations
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Documentation

Data Sheet 1

Application Note 2

Design Note 7

Technical Articles 12

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Software Resources

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Tools & Simulations

Software Development 1

Evaluation Kits

DS2762K

Li+ Battery Monitor Evaluation Kit

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Features and Benefits

  • Demonstrates the Capabilities of the DS2762 Li+ Battery Monitor, Including:
    • Temperature Measurement
    • Voltage Measurement
    • Current Measurement
    • Current Accumulation
    • Temperature and Accumulated Current Alarms
    • Information Storage
    • Identification
    • Overvoltage/Undervoltage Protection
    • Overcurrent/Short-Circuit Protection
  • Interfaces to the Serial Port of a PC Running Windows OS

Product Details

The DS2762K evaluation kit makes performance evaluation, software development, and prototyping with the DS2762 Lithium-Ion (Li+) battery monitor easy. The evaluation board interfaces to a PC through a DS9123 serial-port adapter and RJ-11 cable connection. The provided CD ROM contains all related data sheets along with the evaluation software, which can be run under any Windows® operating system.

The DS2762K evaluation software gives the user complete control of all functions of the DS2762. Separate control tabs allow the user access to all EEPROM and RAM memory locations, all control registers, and real-time updates of all monitored parameters. The software also incorporates a data-logging feature to monitor a cell over time and fuel-gauging algorithms to improve remaining capacity calculations based on specific cell characteristics.

The evaluation board circuit is designed to provide the DS2762 with accurate parameter measurements, allow the DS2762 to disable charging or discharging, and protect the DS2762 from ESD damage. Kit demonstration boards will vary as they are improved upon over time. For information on the demonstration board circuits, refer to the individual board data sheets located inside the documentation directory on the DS2762K CD ROM.
DS2762K
Li+ Battery Monitor Evaluation Kit

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