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DS2745 - Low-Cost I2C Battery Monitor

General Description

The DS2745 provides current-flow, voltage, and temperature measurement data to support batterycapacity monitoring in cost-sensitive applications.

The DS2745 can be mounted on either the host side or pack side of the application.

Key Features

  • 16-Bit Bidirectional Current Measurement 1.56V LSB, ±51.2mV Dynamic Range 104A LSB, ±3.4A Dynamic Range (RSNS = 15m) Current Accumulation Register Resolution 6.25Vhr LSB, ±204.8mVh Range 0.417mAhr LSB, ±13.65Ah Range (RSNS = 15m) 11-Bit Voltage Measurement 4.88mV LSB, 0V to 4.5V Input Range 11-Bit Temperature Measurement 0.125ºC Resolution, -20ºC to +70ºC Industry Standard I2C.
  • Interface Low Power Consumption: Active Current: 70A typical, 100A max Sleep Current: 1A typical, 3A max.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4631; 5/09 www.DataSheet4U.com DS2745 Low-Cost I C Battery Monitor www.maxim-ic.com 2 FEATURES 16-Bit Bidirectional Current Measurement 1.56V LSB, ±51.2mV Dynamic Range 104A LSB, ±3.4A Dynamic Range (RSNS = 15m) Current Accumulation Register Resolution 6.25Vhr LSB, ±204.8mVh Range 0.417mAhr LSB, ±13.65Ah Range (RSNS = 15m) 11-Bit Voltage Measurement 4.88mV LSB, 0V to 4.5V Input Range 11-Bit Temperature Measurement 0.125ºC Resolution, -20ºC to +70ºC Industry Standard I2C* Interface Low Power Consumption: Active Current: 70A typical, 100A max Sleep Current: 1A typical, 3A max PIN CONFIGURATION SCL SDA PIO SNS 1 2 3 4 8 7 6 5 VDD VIN CTG VSS MAX See Table 1 for Ordering Information.