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MAX1667
Chemistry-Independent, Level 2 Smart Battery Charger

1%-Accurate, Chemistry-Independent, Smart Battery Charger Easily Charges 2-4 Series Li+ Cells


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Data Sheet
FULL DATA SHEET (PDF, 312kB)
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Description
The MAX1667 provides the power control necessary to charge batteries of any chemistry. All charging functions are controlled through the Intel® System Management Bus (SMBus™) interface. The SMBus 2-wire serial interface sets the charge voltage and current and provides thermal status information. The MAX1667 functions as a Level 2 charger, compliant with the Duracell®/Intel Smart Battery Charger Specification.

In addition to the feature set required for a Level 2 charger, the MAX1667 generates interrupts to signal the host when power is applied to the charger or when a battery is installed or removed. Additional status bits allow the host to check whether the charger has enough input voltage, and whether the voltage on or current into the battery is being regulated. This allows the host to determine when lithium-ion (Li+) batteries have completed the charge without interrogating the battery.

The MAX1667 is available in a 20-pin SSOP with a 2mm profile height.

Key Features   Applications/Uses
  • Charges Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
  • SMBus 2-Wire Serial Interface
  • Compliant with Duracell/Intel Smart Battery Charger Specification Rev. 1.0
  • 4A, 3A, or 1A (max) Battery Charge Current
  • 5-Bit Control of Charge Current
  • Up to 18.4V Battery Voltage
  • 11-Bit Control of Voltage
  • ±1% Voltage Accuracy
  • Up to +28V Input Voltage
  • Battery Thermistor Fail-Safe Protection
  • Greater than 95% Efficiency
  • Synchronous Rectifier

 
  • Charger Base Stations
  • Notebook Computers
  • PDAs and Other Handheld Devices
  • Phones

    Key Specifications:   Battery Chargers
    Part Number Cell Chemistry Number of NiMH or NiCd cells Number of Lithium-Ion cells Protected VIN (max) (V) Charging VIN (max) (V) Internal FET/Transistor Charger (V) Charge Rate Set by Max. Charge Current (A) Charge Termination Charge Regulation Features EV-Kit Package Smallest Available Package (max w/pins) (mm2) RoHS Available Operating Temp. Range (°C)
    MAX1667  Lead Acid
    Li-Ion
    Li-Polymer
    NiCd
    NiMH
    Universal
    1
    2
    3
    4
    5
    6
    7
    8
    1
    2
    3
    4
    28 28 No 0 to 18.4 Resistor
    SMBus
    4 Smart Battery Control Switchmode
    Serial I/F
    Thermistor Input
    Yes SSOP/20 58 Yes -40 to +85
    See All Battery Chargers (60)

    Diagram
    MAX1667: Typical Operating Circuit
    Typical Operating Circuit

    Evaluation Kits
  • MAX1667EVKIT, MAX1667EVSYS

    Reliability Reports
  • Show FIT data for:
  • Request Reliability Report for:

    Software/Models
    none

    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: 1-4 of 4

    MAX1667 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1667EAP  
    SSOP;20 pin;58 mm²
    Dwg: 21-0056C (PDF)
    Use pkgcode/variation: A20-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1667EAP-T  
    SSOP;20 pin;58 mm²
    Dwg: 21-0056C (PDF)
    Use pkgcode/variation: A20-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1667EAP+T  
    SSOP;20 pin;58 mm²
    Dwg: 21-0056C (PDF)
    Use pkgcode/variation: A20+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1667EAP+  
    SSOP;20 pin;58 mm²
    Dwg: 21-0056C (PDF)
    Use pkgcode/variation: A20+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
  • Up to 18.4V battery voltage, synchronous rectifier, 11-bit voltage control, 5-Bit Current Control

    More Information
  • New Product Press Release 1999-07-14 

    Related Products
    MAX1647, MAX1648 Chemistry-Independent Battery Chargers
    MAX1645, MAX1645A Advanced-Chemistry-Independent, Level-2 Battery Chargers with Input Current Limiting

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     Description 
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    Document Ref.: 19-1488; Rev 1; 2003-06-18
    This page last modified: 2007-06-04



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