DESCRIPTION

The DS2760 High Precision Li-Ion 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-Ion 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-Ion safety circuit

- Overvoltage protection

- Overcurrent/short circuit protection

- Undervoltage protection

■ Available in two configurations:

- Internal 25 mΩ sense resistor

- External user-selectable sense resistor

■ Current measurement

- 12-bit bi-directional measurement

- Internal sense resistor configuration: 0.625 mA LSB and ±1.8A dynamic range

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

■ Current accumulation

- Internal sense resistor: 0.25 mAhr LSB

- External sense resistor: 6.25 µVhr LSB

■ Voltage measurement with 4.88 mV 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: 80 µA max

- Sleep current: 2 µA max