DS2775

PRODUCTION

2-Cell, Fuel Gauge with FuelPack, Protector, and SHA-1 Authentication

Industry's Smallest 2-Cell, Stand-Alone Fuel Gauge to Integrate an Li+ Protector and SHA-1 Authentication

Data Sheet (Rev. 5) Product Selection Table
Part Models
2
1ku List Price
Starting From $4.54
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Part Details

  • High-Side nFET Drivers and Protection Circuitry
  • Precision Voltage, Temperature, and Current Measurement System
  • Cell-Capacity Estimation from Coulomb Count, Discharge Rate, Temperature, and Cell Characteristics
  • Estimates Cell Aging Between Learn Cycles
  • Uses Low-Cost Sense Resistor
  • Allows Calibration of Gain and Temperature Coefficient
  • Programmable Thresholds for Overvoltage and Overcurrent
  • Pack Authentication Using SHA-1 Algorithm (DS2776/DS2778)
  • 32-Byte Parameter EEPROM
  • 16-Byte User EEPROM
  • Maxim 1-Wire Interface with 64-Bit Unique ID (DS2775/DS2776)
  • 2-Wire Interface with 64-Bit Unique ID (DS2777/DS2778)
  • 3mm x 5mm, 14-pin TDFN Lead-Free Package
DS2775
2-Cell, Fuel Gauge with FuelPack, Protector, and SHA-1 Authentication
DS2775-8 report available capacity for rechargeable lithium-ion (Li+) and Li+ polymer (Li-Poly) batteries in mAh | Typical Application Circuits
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Documentation

Data Sheet 1

Reliability Data 1

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Tools & Simulations

Software Development 1

Evaluation Kits

DS2778EVKIT

Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778

Buy Now View Details

Features and Benefits

  • Demonstrate the Capabilities of the DS2775–DS2778 Including:
    • Estimation of Available Capacity for Li+ Cells
    • 2-Cell Voltage Measurement
    • Current Measurement
    • Current Accumulation
    • Temperature Measurement
    • Information Storage
    • Identification
    • Overvoltage/Undervoltage Protection
    • Overcurrent/Short-Circuit Protection
    • Secure Challenge and Response Authentication Using the SHA-1 Algorithm (DS2776 and DS2778 Only)
    • Interface to the USB Port of a PC Running a Windows XP or Older OS That Supports USB Operation

Product Details

The DS2775–DS2778 evaluation kits (EV kits) make performance evaluation, software development, and prototyping with the DS2775–DS2778 2-cell stand-alone fuel-gauge ICs with Li-Ion (Li+) protector and SHA-1 authentication easy. The evaluation boards interface to a PC through a DS9123O USB adapter and RJ11 cable connection. The provided CD-ROM contains all related data sheets along with the evaluation software, which can be run under any Windows XP® or older operating system (OS) that supports USB operation.

The DS2775–DS2778 EV kit software gives the user complete control of all the DS2775–DS2778 functions. Separate control tabs allow the user access to all EEPROM and RAM memory locations, control registers, real-time updates of all monitored parameters, and SHA-1 functions. The software also incorporates a data-logging feature to monitor a cell over time.

The evaluation board circuit is designed to provide the DS2775–DS2778 with accurate parameter measurements. Kit demonstration boards vary as they are improved upon over time.

Applications

  • Commercial and Military Radios
  • DSLR Cameras
  • Low-Cost Notebooks
  • Portable Medical Equipment
  • UMPCs
  • Video Cameras

DS2775EVKIT

Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778

Buy Now View Details

Features and Benefits

  • Demonstrate the Capabilities of the DS2775–DS2778 Including:
    • Estimation of Available Capacity for Li+ Cells
    • 2-Cell Voltage Measurement
    • Current Measurement
    • Current Accumulation
    • Temperature Measurement
    • Information Storage
    • Identification
    • Overvoltage/Undervoltage Protection
    • Overcurrent/Short-Circuit Protection
    • Secure Challenge and Response Authentication Using the SHA-1 Algorithm (DS2776 and DS2778 Only)
    • Interface to the USB Port of a PC Running a Windows XP or Older OS That Supports USB Operation

Product Details

The DS2775–DS2778 evaluation kits (EV kits) make performance evaluation, software development, and prototyping with the DS2775–DS2778 2-cell stand-alone fuel-gauge ICs with Li-Ion (Li+) protector and SHA-1 authentication easy. The evaluation boards interface to a PC through a DS9123O USB adapter and RJ11 cable connection. The provided CD-ROM contains all related data sheets along with the evaluation software, which can be run under any Windows XP® or older operating system (OS) that supports USB operation.

The DS2775–DS2778 EV kit software gives the user complete control of all the DS2775–DS2778 functions. Separate control tabs allow the user access to all EEPROM and RAM memory locations, control registers, real-time updates of all monitored parameters, and SHA-1 functions. The software also incorporates a data-logging feature to monitor a cell over time.

The evaluation board circuit is designed to provide the DS2775–DS2778 with accurate parameter measurements. Kit demonstration boards vary as they are improved upon over time.

Applications

  • Commercial and Military Radios
  • DSLR Cameras
  • Low-Cost Notebooks
  • Portable Medical Equipment
  • UMPCs
  • Video Cameras

DS2776EVKIT

Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778

Buy Now View Details

Features and Benefits

  • Demonstrate the Capabilities of the DS2775–DS2778 Including:
    • Estimation of Available Capacity for Li+ Cells
    • 2-Cell Voltage Measurement
    • Current Measurement
    • Current Accumulation
    • Temperature Measurement
    • Information Storage
    • Identification
    • Overvoltage/Undervoltage Protection
    • Overcurrent/Short-Circuit Protection
    • Secure Challenge and Response Authentication Using the SHA-1 Algorithm (DS2776 and DS2778 Only)
    • Interface to the USB Port of a PC Running a Windows XP or Older OS That Supports USB Operation

Product Details

The DS2775–DS2778 evaluation kits (EV kits) make performance evaluation, software development, and prototyping with the DS2775–DS2778 2-cell stand-alone fuel-gauge ICs with Li-Ion (Li+) protector and SHA-1 authentication easy. The evaluation boards interface to a PC through a DS9123O USB adapter and RJ11 cable connection. The provided CD-ROM contains all related data sheets along with the evaluation software, which can be run under any Windows XP® or older operating system (OS) that supports USB operation.

The DS2775–DS2778 EV kit software gives the user complete control of all the DS2775–DS2778 functions. Separate control tabs allow the user access to all EEPROM and RAM memory locations, control registers, real-time updates of all monitored parameters, and SHA-1 functions. The software also incorporates a data-logging feature to monitor a cell over time.

The evaluation board circuit is designed to provide the DS2775–DS2778 with accurate parameter measurements. Kit demonstration boards vary as they are improved upon over time.

Applications

  • Commercial and Military Radios
  • DSLR Cameras
  • Low-Cost Notebooks
  • Portable Medical Equipment
  • UMPCs
  • Video Cameras

DS2777EVKIT

Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778

Buy Now View Details

Features and Benefits

  • Demonstrate the Capabilities of the DS2775–DS2778 Including:
    • Estimation of Available Capacity for Li+ Cells
    • 2-Cell Voltage Measurement
    • Current Measurement
    • Current Accumulation
    • Temperature Measurement
    • Information Storage
    • Identification
    • Overvoltage/Undervoltage Protection
    • Overcurrent/Short-Circuit Protection
    • Secure Challenge and Response Authentication Using the SHA-1 Algorithm (DS2776 and DS2778 Only)
    • Interface to the USB Port of a PC Running a Windows XP or Older OS That Supports USB Operation

Product Details

The DS2775–DS2778 evaluation kits (EV kits) make performance evaluation, software development, and prototyping with the DS2775–DS2778 2-cell stand-alone fuel-gauge ICs with Li-Ion (Li+) protector and SHA-1 authentication easy. The evaluation boards interface to a PC through a DS9123O USB adapter and RJ11 cable connection. The provided CD-ROM contains all related data sheets along with the evaluation software, which can be run under any Windows XP® or older operating system (OS) that supports USB operation.

The DS2775–DS2778 EV kit software gives the user complete control of all the DS2775–DS2778 functions. Separate control tabs allow the user access to all EEPROM and RAM memory locations, control registers, real-time updates of all monitored parameters, and SHA-1 functions. The software also incorporates a data-logging feature to monitor a cell over time.

The evaluation board circuit is designed to provide the DS2775–DS2778 with accurate parameter measurements. Kit demonstration boards vary as they are improved upon over time.

Applications

  • Commercial and Military Radios
  • DSLR Cameras
  • Low-Cost Notebooks
  • Portable Medical Equipment
  • UMPCs
  • Video Cameras
DS2778EVKIT
Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778
DS2775EVKIT
Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778
DS2776EVKIT
Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778
DS2777EVKIT
Evaluation Kit for the DS2775, DS2776, DS2777, and DS2778

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