The DS2764 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 (NV) data storage, and Li+ protection into the small footprint of either a TSSOP package or flip-chip package. The DS2764 is a key component in applications requiring remaining
capacity estimation, safety monitoring, and battery specific data storage.
APPLICATIONS
PDAs
Cell Phones/Smartphones
Digital Cameras
Feature
Li+ Safety Circuit
Overvoltage Protection
Overcurrent/Short-Circuit Protection
Undervoltage Protection
0V 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
40 Bytes of Lockable EEPROM
Option for Unique 64-bit ID
Industry 2-Wire Interface with Programmable Slave Address
Low-Power Consumption:
Active Current: 60µA typ, 90A max
Sleep Current: 1µA typ, 2A max
