DS2784G+

The DS2784G+ is a 1-cell stand-alone fuel gauge IC with Li+ protector and SHA-1 authentication in 14 pin TDFN package. This device is used to operate with battery packs of single lithium-ion (Li+) or Li+ polymer cell. Available capacity is reported in mAh and as a percentage. Safe operation is ensured with the included Li+ protection function and SHA-1-based challenge-response authentication. Voltage, temperature and current, cell characteristics and application parameters are used to estimate capacity. The capacity registers report a conservative estimate of the amount of charge from all application parameters.

• Supply voltage range is 2.5V to 4.6V
• Operating temperature range from -40°C to 85°C
• Capacity estimated from coulomb count, discharge rate, temperature & cell characteristics
• Estimates cell aging using learn cycles
• Allows for calibration of gain and temperature coefficient
• Li+ safety circuitry for overvoltage, undervoltage, overcurrent, short-circuit protection
• Authentication using SHA-1 algorithim and 64bit secret
• 32byte parameter EEPROM
• 16byte user EEPROM
• 1-wire interface with 64bit unique ID

Applications

Power Management, Portable Devices

Remarques

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party