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DS2764
High-Precision Li+ Battery Monitor with 2-Wire Interface

2-wire battery monitor integrates single-cell protector


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Description
FULL DATA SHEET (PDF, 252kB)
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The DS2764 high-precision Li+ battery monitor is a data-acquisition, information-storage, and safety-protection device tailored for cost-sensitive battery pack applications. This low-power device integrates precise temperature, voltage, and current measurement, nonvolatile (NV) data storage, and Li+ protection into the small footprint of either a TSSOP package or flip-chip package. The DS2764 is a key component in applications requiring remaining capacity estimation, safety monitoring, and battery-specific data storage.

NOTE: This product requires use of the following:

  • DS2764K Evaluation Kit Software

    Key Features   Applications/Uses
    • Li+ Safety Circuit
      • Overvoltage Protection
      • Overcurrent/Short-Circuit Protection
      • Undervoltage Protection
    • 0V Battery Recovery Charge
    • Available in Two Configurations:
    • Internal 25m 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

     
  • Cell Phones/Smartphones
  • Digital Cameras
  • PDAs

    Key Specifications:   Battery Protectors, Selectors and Monitors
    Part Number Functions Battery Type Interface User Data Storage (bytes) Parameters Measured Battery Protection Supply Voltage (min) (V) Supply Voltage (max) (V) Package Operating Temp. Range (°C) Price**
    DS2764 
    Fuel Gauge
    Protector
    1 Cell Li-Ion 2-Wire 40 EEPROM Current
    Temperature
    Voltage
    Over-Current
    Over/Under Voltage
    2.5 5.5 TSSOP/16 -40 to +85 $2.68 @ 1k
    See All Battery Protectors, Selectors and Monitors (21)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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    2006-01-18
    This page last modified: 2006-11-22



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