GENERAL DESCRIPTION

The DS2762 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 DS2762 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


Host Alerted When Accumulated Current or Temperature Exceeds User-Selectable Limits


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


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: 60A typ, 90A max

  Sleep Current: 1A typ, 2A max



APPLICATIONS

PDAs

Cell Phones/Smartphones

Digital Cameras