Analog Devices DS2762 Product Info

• 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 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: 15.625µV LSB and ±64mV Dynamic Range
• Current Accumulation:
  • Internal Sense Resistor: 0.25mAhr LSB
  • External Sense Resistor: 6.25µVhr 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: 60µA typ, 90µA max
  • Sleep Current: 1µA typ, 2µA max

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.

Applications

• Cell Phones/Smartphones
• Digital Cameras
• PDAs