Battery ID/Monitor Chip

The DS2436 Battery Identification/Monitor Chip provides a convenient method of tagging and identifying battery packs by manufacturer, chemistry, or other identifying parameters. The DS2436 allows the battery pack to be coded with a unique 64-Bit ROM ID and a 16-Bit Manufacturer ID, and also store information regarding the battery life and charge/discharge characteristics in its nonvolatile memory.

The DS2436 also performs the essential function of monitoring battery temperature, without the need for a thermistor in the battery pack.

A cycle counter assists to determine the remaining cycle life of the battery.

Finally, the DS2436 measures battery voltage and sends that measured value to a host CPU for use in end-of-charge or end-of-discharge determination or basic fuel gauge operation.

Information is sent to/from the DS2436 over a 1-Wire® interface, so that battery packs need only have three output connectors: power, ground, and the 1-Wire interface.

Applications

* Consumer Electronics * Handheld Instruments * Portable Computing * Portable/Cellular Phones

* Unique 1-Wire interface requires only one port pin for communication

* Provides unique 64-bit identification number to battery packs

* On-board A/D converter monitors battery voltage for end-of-charge and end-of-discharge determination

* Eliminates thermistors by sensing battery temperature on-chip

* 256-bit nonvolatile user memory available for storage of data such as fuel gauge and manufacturing information

* 2-byte cycle counter

* Operating range of -40°C to +85°C

* Applications include portable computers, portable/ cellular phones, consumer electronics, and handheld instrumentation