DS2745

PRODUCTION

Low-Cost I²C Battery Monitor

Low-cost battery fuel gauge that monitors current, voltage, and temperature

Data Sheet (Rev. 2) Product Selection Table

Part Models: 2
1ku List Price: Starting From $3.63

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Overview

16-Bit Bidirectional Current Measurement
- 1.56µV LSB, ±51.2mV Dynamic Range
- 104µA LSB, ±3.4A Dynamic Range (R_SNS = 15mΩ)
Current Accumulation Register Resolution
- 6.25µVhr LSB, ±204.8mVh Range
- 0.417mAhr LSB, ±13.65Ah Range (R_SNS = 15mΩ)
11-Bit Voltage Measurement
4.88mV LSB, 0V to 5V Input Range
11-Bit Temperature Measurement
0.125°C Resolution, -20°C to +70°C
Industry Standard I²C Interface
Low Power Consumption:
- Active Current: 70µA typical, 100µA max
- Sleep Current: 1µA typical, 3µA max

Part Models: 2
1ku List Price: Starting From $3.63

Documentation

Data Sheet 1

DS2745: Low-Cost I²C Battery Monitor Data Sheet (Rev.2) 06/22/2009

Technical Articles 2

Important Design Considerations for Heart-Rate and Fitness Monitors 05/10/2010

Introduction to Hearing Aids and Important Design Considerations 05/10/2010

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
DS2745U+	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
DS2745U+T&R	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Monitors & Fuel Gauges 3
DS2740	PRODUCTION	High-Precision Coulomb Counter
DS2764	PRODUCTION	High-Precision Li+ Battery Monitor with 2-Wire Interface
DS2782	PRODUCTION	Stand-Alone Fuel Gauge IC

Tools & Simulations

Software Development 1

DS2745K Evaluation Kit Software, 1.1.0

Evaluation Kits

Evaluation Kit for the DS2745

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Features and Benefits

Demonstrates the capabilities of the DS2745 Low Cost I²C Battery Monitor, including:
- Temperature measurement
- Voltage measurement
- Current measurement
- Current accumulation
Interfaces to the USB of a PC running Windows XP® or older operating system

Product Details

The DS2745 evaluation kit (EV kit) makes performance evaluation, software development, and prototyping with the DS2745 Low-Cost I²C Battery Monitor easy. The evaluation board interfaces to a PC through a DS9123O USB Adapter and RJ-11 cable connection.

The DS2745 EV kit evaluation software gives the user complete control of all functions of the DS2745. Separate control tabs allow the user access to all 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.

The evaluation board circuit is designed to provide the DS2745 with accurate parameter measurements and protect the DS2745 from ESD damage.

Applications

Cellular
GPS
Handheld Products
PDAs

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