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DS2762
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


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Data Sheet
FULL DATA SHEET (PDF, 268kB)
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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.

NOTE: This product requires use of the following:

  • DS2762K Evaluation Kit Software

    Key Features   Applications/Uses
    • 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

     
  • Cell Phones/Smartphones
  • Digital Cameras
  • PDAs

    Key Specifications:   Battery Protectors, Selectors and Monitors
    Part Number Functions Battery Type Interface User Data Storage (bytes) Parameters Measured Battery Protection Supply Voltage (min) (V) Supply Voltage (max) (V) Features Package Smallest Available Package (max w/pins) (mm2) RoHS Available Operating Temp. Range (°C) Price**
    DS2762 
    Fuel Gauge
    Protector
    Status Monitor
    1 Cell Li-Ion 1-Wire 16 SRAM
    32 EEPROM
    Current
    Temperature
    Voltage
    Over-Current
    Over/Under Voltage
    2.5 5.5
    Accumulated Current & Temperature Alerts
    Digital Current Accumulation
    External MOSFET Drivers
    Unique ID
    FCHIP/12
    TSSOP/16
    7 Yes -40 to +85 $2.55 @ 1k
    See All Battery Protectors, Selectors and Monitors (21)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    DS2762: Pin Configurations
    Pin Configurations

    Application Notes
  • Application Note 121: Inaccuracies of Estimating Remaining Cell Capacity with Voltage Measurements Alone - DS2762
  • Application Note 126: 1-Wire Communication Through Software - DS2762
  • Application Note 128: Testing and Calibrating a DS2760 Li-Ion Battery Monitor and Protector Based Circuit - DS2762
  • Application Note 131: Lithium-Ion Cell Fuel Gauging with Maxim Battery Monitor ICs - DS2762
  • Application Note 138: Using the DS2760 or DS2761 Battery Monitor in Multiple-Cell Applications - DS2762
  • Application Note 143: Multiple Battery Pack Applications Using the DS2760 or DS2761 - DS2762
  • Application Note 148: Guidelines for Reliable 1-Wire Networks - DS2762
  • Application Note 159: Ultra-Reliable 1-Wire Communications - DS2762
  • Application Note 165: Interfacing the DS2760 1-Wire High-Precision Li-Ion Battery Monitor and Protection IC in a Microcontroller Environment - DS2762
  • Application Note 187: 1-Wire Search Algorithm - DS2762
  • Application Note 192: Using the DS2480B Serial 1-Wire Line Driver - DS2762
  • Application Note 197: Sense Resistor Power Dissipation - DS2762
  • Application Note 214: Using a UART to Implement a 1-Wire Bus Master - DS2762
  • Application Note 221: DS276x Product Comparison - DS2762
  • Application Note 224: Calibrating the Offset Register of the DS2761 - DS2762
  • Application Note 231: Compensating for Sense Resistor Self Heating - DS2762
  • Application Note 1919: Increasing the Fuel Gauge Dynamic Range - DS2762
  • Application Note 2416: DS27xx Fuel Gauge Board Layout Techniques to Minimize Measurement Error - DS2762
  • Application Note 2420: 1-Wire Communication with a Microchip PICmicro Microcontroller - DS2762
  • Application Note 3065: Powering up a DS2762 - DS2762
  • Application Note 3225: Waking up a DS2761/DS2762 - DS2762
  • Application Note 3377: Maxim Wafer-Level Package Assembly Guide - DS2762
  • Application Note 3407: Upgrading to the DS2762 from the DS2761 - DS2762
  • Application Note 3489: Installing the DS9123O USB Adapter on Windows® 98 - DS2762
  • Application Note 4002: Understanding Flip-Chip and Chip-Scale Package Technologies and Their Applications - DS2762

    Evaluation Kits
  • DS2762K

    Design Guides
  • BATTERY MANAGEMENT (PDF)
  • POWER MANAGEMENT FOR BATTERY-POWERED EQUIPMENT (PDF)

    Reliability Reports
  • Reliability Report: DS2762.pdf

    Software/Models
  • DS2762K Evaluation Kit Software

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-20 of 20

    DS2762 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    DS2762AX/T&R  
    FCHIP;12 pin;7 mm²
    Dwg: 56-G2762-001
    Use pkgcode/variation: BF1233-1*
    -40°C to +85°C See data sheet
    DS2762BX/T&R  
    FCHIP;12 pin;7 mm²
    Dwg: 56-G2762-001
    Use pkgcode/variation: BF1233-1*
    -40°C to +85°C See data sheet
    DS2762BX-025/T&R  
    FCHIP;12 pin;7 mm²
    Dwg: 56-G2762-001
    Use pkgcode/variation: BF1233-1*
    -40°C to +85°C See data sheet
    DS2762AX-025/T&R  
    FCHIP;12 pin;7 mm²
    Dwg: 56-G2762-001
    Use pkgcode/variation: BF1233-1*
    -40°C to +85°C See data sheet
    DS2762AE  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762AE+025/T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1F*
    -40°C to +85°C See data sheet
    DS2762AE+025  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1F*
    -40°C to +85°C See data sheet
    DS2762AE+  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762BE+T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762BE+  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762BE/T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762BE+025/T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1F*
    -40°C to +85°C See data sheet
    DS2762BE+025  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1F*
    -40°C to +85°C See data sheet
    DS2762BE-025/T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1F*
    -40°C to +85°C See data sheet
    DS2762BE-025  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1F*
    -40°C to +85°C See data sheet
    DS2762BE  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762AE/T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762AE-025/T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1F*
    -40°C to +85°C See data sheet
    DS2762AE-025  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16-1F*
    -40°C to +85°C See data sheet
    DS2762AE+T&R  
    TSSOP;16 pin;33 mm²
    Dwg: 56-G2019-000A (PDF)
    Use pkgcode/variation: U16+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
    Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

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     Description 
     Key Features 
     Applications/Uses 
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     Data Sheet 
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     Engineering Journals 
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     Software/Models 
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    2006-01-09
    This page last modified: 2008-03-07



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