DS2777G+

The DS2777G+ is a dual cell, stand-alone Li+ fuel gauge IC with protector in 14 pin TDFN package. This device supports rechargeable lithium-ion (Li+) and Li+ polymer (Li-Poly) batteries in mAh and as a percentage of full. Safe operation is ensured by the integrated Li+ protector. DS2777 capability includes precision measurements of voltage, temperature and current along with a cell characteristics table and application parameters. The capacity registers report a conservative estimate of the amount of charge that can be removed given the current temperature, discharge rate, stored charge and application parameters. the device offers a 16 bytes of EEPROM for use by the host system and/or pack manufacturer to store battery lot and date tracking information. The EEPROM can also be used for non-volatile storage of system and/or battery usage statistics.

• Supply voltage range is 4V to 9.2V
• Operating temperature range from -20°C to 70°C
• 2-wire interface with 64bit unique ID
• High-side nFET driver and protection circuitry
• Estimates cell aging between learn cycles
• Uses low-cost sense resistor
• Allows calibration of gain and temperature coefficient
• Programmable thresholds for overvoltage and overcurrent
• 32byte parameter EEPROM

Applications

Power Management, Portable Devices, Imaging, Video & Vision

Notes

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