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High-Precision Li+ Battery Monitor with Alerts

1-Wire Battery Monitor Integrates Single-Cell Protector and Alerts System when Current or Temperature Exceeds User-Defined Limits

Product Details

Key Features

Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Fuel Gauge
Protector
Status Monitor
Battery Type 1 Cell Li-Ion
Interface 1-Wire
User Data Storage (Bytes) 16 SRAM
32 EEPROM
Parameters Measured Current
Temperature
Voltage
End Equipment Pack
Battery Protection Features Over-Current
Over/Under Voltage
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 5.5
Package/Pins TSSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
4.26
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Simplified Block Diagram

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Parameters

Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Fuel Gauge
Protector
Status Monitor
Battery Type 1 Cell Li-Ion
Interface 1-Wire
User Data Storage (Bytes) 16 SRAM
32 EEPROM
Parameters Measured Current
Temperature
Voltage
End Equipment Pack
Battery Protection Features Over-Current
Over/Under Voltage
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 5.5
Package/Pins TSSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
4.26

Key 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 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

Applications/Uses

  • Cell Phones/Smartphones
  • Digital Cameras
  • PDAs

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.

Simplified Block Diagram

DS2762 high-precision Li+ battery monitor is a data-acquisition, information-storage, and safety-protection device tailored for cost-sensitive battery pack applications | Pin Configurations DS2762 high-precision Li+ battery monitor is a data-acquisition, information-storage, and safety-protection device tailored for cost-sensitive battery pack applications | Pin Configurations Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .