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GENERAL DESCRIPTION

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.

FEATURES

Li+ Safety Circuit

?? Overvoltage Protection

?? Overcurrent/Short-Circuit Protection

?? Undervoltage Protection

0V Battery Recovery Charge

Available in Two Configurations:

? ?Internal 25m? 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

APPLICATIONS

PDAs

Cell Phones/Smartphones

Digital Cameras