DESCRIPTION

The DS2760 High-Precision Li+ Battery Monitor is a data acquisition, information storage, and safety protection device tailored for cost-sensitive battery pack applications. This low-power device integrates precise temperature, voltage, and current measurement, nonvolatile data storage, and Li+ protection into the small footprint of either a TSSOP package or flip chip. The DS2760 is a key component in applications including remaining capacity estimation, safety monitoring, and battery-specific data storage.

FEATURES

■ Li+ safety circuit

    - Overvoltage protection

    - Overcurrent/short circuit protection

    - Undervoltage protection

■ Zero Volt Battery Recovery Charge

■ Available in two configurations:

    - Internal 25mΩ sense resistor

    - External user-selectable sense resistor

■ Current measurement

    - 12-bit bidirectional measurement

    - Internal sense resistor configuration: 0.625mA LSB and ±1.9A dynamic range

    - External sense resistor configuration: 15.625V LSB and ±64mV dynamic range

■ Current accumulation

    - Internal sense resistor: 0.25mAhr LSB

    - External sense resistor: 6.25Vhr LSB

■ Voltage measurement with 4.88mV resolution

■ Temperature measurement using integrated sensor with 0.125°C resolution

■ System power management and control feature support

■ 32 bytes of lockable EEPROM

■ 16 bytes of general purpose SRAM

■ Dallas 1-Wire® interface with unique 64-bit device address

■ Low power consumption:

    - Active current: 90 μA max

    - Sleep current: 2 μA max