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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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Status
Part Number Status
DS2762 Active: In production, but some versions are no longer available. See Ordering Information.

Data Sheet
FULL DATA SHEET (PDF, 268kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

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.

An evaluation kit is available:  DS2762K  

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
    		 

    Key Specifications:  Battery Protectors, Selectors and Monitors
    Part Number Functions Battery Type Interface User Data Storage
    (Bytes)    		 Parameters Measured Battery Protection VSUPPLY
    (V)    		 VSUPPLY
    (V)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    min max max w/pins See Notes
    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
    FCHIP/12
    TSSOP/16
    		 7 -40 to +85 $2.55 @1k
    See All Battery Protectors, Selectors and Monitors (26)

    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 131: Lithium-Ion Cell Fuel Gauging with Maxim Battery Monitor ICs - DS2762
  • Application Note 148: Guidelines for Reliable Long Line 1-Wire® Networks - 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
  • 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: 1-22 of 22

    DS2762 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS2762BX-025-C01     N/A No Longer Available

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    DS2762BX-C01/T&R     N/A No Longer Available

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    DS2762AX/T&R    
    		Active FCHIP;12 pin;7 mm²
    Outline Drawing: 21-0281 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: BF1233-1*
    		-40°C to +85°C See data sheet
    DS2762AX-025/T&R    
    		Active FCHIP;12 pin;7 mm²
    Outline Drawing: 21-0281 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: BF1233-1*
    		-40°C to +85°C See data sheet
    DS2762BX-025/T&R    
    		Active FCHIP;12 pin;7 mm²
    Outline Drawing: 21-0281 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: BF1233-1*
    		-40°C to +85°C See data sheet
    DS2762BX/T&R    
    		Active FCHIP;12 pin;7 mm²
    Outline Drawing: 21-0281 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: BF1233-1*
    		-40°C to +85°C See data sheet
    DS2762AE    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762AE-025    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1F*
    		-40°C to +85°C See data sheet
    DS2762AE-025/T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1F*
    		-40°C to +85°C See data sheet
    DS2762AE/T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762BE    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762BE-025    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1F*
    		-40°C to +85°C See data sheet
    DS2762BE-025/T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1F*
    		-40°C to +85°C See data sheet
    DS2762BE+025  
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16+1F*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762BE+025/T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16+1F*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762BE/T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2762BE+  
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762BE+T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762AE+  
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762AE+025  
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16+1F*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762AE+025/T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (PDF)
    Use pkgcode/variation: U16+1F*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2762AE+T&R    
    		Active TSSOP;16 pin;33.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0117 (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 
     Key Specifications 
     Diagram 

    		 Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
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     Software/Models 
     Evaluation Kits 

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    2006-01-09
    This page last modified: 2008-03-07


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