DS2764

PRODUCTION

High-Precision Li+ Battery Monitor with 2-Wire Interface

2-wire battery monitor integrates single-cell protector

Data Sheet (Rev. 2) Product Selection Table
Part Models
4
1ku List Price
Starting From $4.48
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Part Details

  • Li+ Safety Circuit
    • Overvoltage Protection
    • Overcurrent/Short-Circuit Protection
    • Undervoltage Protection
  • 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
  • 40 Bytes of Lockable EEPROM
  • Option for Unique 64-bit ID
  • Industry 2-Wire Interface with Programmable Slave Address
  • Low-Power Consumption:
    • Active Current: 60µA typ, 90µA max
    • Sleep Current: 1µA typ, 2µA max
DS2764
High-Precision Li+ Battery Monitor with 2-Wire Interface
DS2764 high-precision Li+ battery monitor is a data-acquisition, information-storage, and safety-protection device tailored for cost-sensitive battery pack applications | Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

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Tools & Simulations

Software Development 1

Evaluation Kits

DS2764EVKIT

Evaluation Kit for the DS2764

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Features and Benefits

  • Demonstrates the capabilities of the DS2764 Li+ Battery Monitor, including:
    • Temperature measurement
    • Voltage measurement
    • Current measurement
    • Current accumulation
    • Information storage
    • Identification
    • Overvoltage/Undervoltage protection
    • Overcurrent/short circuit protection
  • Interfaces to the USB port of a PC running Windows XP® or older operating system

Product Details

The DS2764 evaluation kit (EV kit) makes performance evaluation, software development, and prototyping with the DS2764 Lithium-Ion Battery Monitor easy. The evaluation board interfaces to a PC through a DS9123O USB Port Adapter and RJ-11 cable connection.

The DS2764 EV kit evaluation software gives the user complete control of all functions of the DS2764. 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 DS2764 with accurate parameter measurements, allow the DS2764 to disable charging or discharging, and protect the DS2764 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 datasheets located online at www.maximintegrated.com.
DS2764EVKIT
Evaluation Kit for the DS2764

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