
Maxim Integrated
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