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DS2741 Current Monitor and Acc

欄目：公司新聞發(fā)布時間：2008-10-22訪問量：737次

DS2741 Current Monitor and Accumulator with Integrated Sense Resistor

DS2741概述

The DS2741 current monitor/accumulator is a complete current-sensing, measuring, and accumulation device tailored for cost-sensitive, battery-powered applications in a small 3mm x 3mm TDFN package. As a result, the DS2741 is a key component in battery-charge control and remaining capacity-estimation applications.

Through its I²C interface, the DS2741 gives the host system access to current measurement and accumulation registers. The 7-bit slave address is factory programmable, allowing up to 128 devices to be individually addressed by the host system.

DS2741關(guān)鍵特性

  • Complete, Low-Cost, Integrated Current-Sensing and Accumulation Solution with Serial Digital Output
  • On-Board 38mΩ Sense Resistor
  • Current Measurement:
    • Signed 10-Bit Bidirectional Measurement
    • ±2.5A Dynamic Range
    • 1% Error at +25°C
    • 2% Error Over Temperature
  • Current Accumulation:
    • 0.247mAhr LSB
    • ±8.1Ahrs Full-Scale Range
  • Industry-Standard I²C Interface with Factory-Programmable Slave Address
  • 2.5V to 4.5V Single-Supply Operation
  • Low-Power Consumption:
    • Active Current: 60µA (typ)
    • Sleep Current: 1µA (typ)
  • -20°C to +70°C Operating Range
  • 14-Pin TDFN (3mm x 3mm x 0.8mm)

    • DS2741 pdf datasheet (Current Monitor and Accumulator with Integrated Sense Resistor)

    DS2741應用/使用

  		•  Battery Monitor/Rechargers
  		•  蜂窩電話
  		•  PDA

    DS2741應用電路

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