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Smart Battery Monitor DS2438A For Computer / Cellular Phone

    Buy cheap Smart Battery Monitor DS2438A For Computer / Cellular Phone from wholesalers
     
    Buy cheap Smart Battery Monitor DS2438A For Computer / Cellular Phone from wholesalers
    • Buy cheap Smart Battery Monitor DS2438A For Computer / Cellular Phone from wholesalers

    Smart Battery Monitor DS2438A For Computer / Cellular Phone

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    Brand Name : MAXIM
    Model Number : DS2438A
    Certification : Original Factory Pack
    Price : Negotiation
    Payment Terms : T/T, Western Union,PayPal
    Supply Ability : 5200PCS
    Delivery Time : 1 Day
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    Smart Battery Monitor DS2438A For Computer / Cellular Phone

    DS2438

    Smart Battery Monitor

    FEATURES

    ♦Unique 1-Wire® interface requires only one port pin for communication

    ♦Provides unique 64-bit serial number

    ♦Eliminates thermistors by sensing battery temperature on-chip

    ♦On-board A/D converter allows monitoring of battery voltage for end-of-charge and endof-discharge determination

    ♦On-board integrated current accumulator facilitates fuel gauging

    ♦Elapsed time meter in binary format

    ♦40-byte nonvolatile user memory available for storage of battery-specific data

    ♦Reverts to low-power sleep mode on battery pack disconnect (feature disabled on DS2438AZ)

    ♦Operating range -40ºC to +85ºC

    ♦Applications include portable computers, portable/cellular phones, consumer electronics, and handheld instrumentation PIN ASSI


    PIN DESCRIPTION

    DQ - Data In/Out

    VAD - General A/D input

    VSENS+ - Battery current monitor input (+)

    VSENS- - Battery current monitor input (-)

    VDD - Power Supply (2.4V to 10.0V)

    GND - Ground NC - No connect


    DESCRIPTION

    The DS2438 Smart Battery Monitor provides several functions that are desirable to carry in a battery pack: a means of tagging a battery pack with a unique serial number, a direct-to-digital temperature sensor which eliminates the need for thermistors in the battery pack, an A/D converter which measures the battery voltage and current, an integrated current accumulator which keeps a running total of all current going into and out of the battery, an elapsed time meter, and 40 bytes of nonvolatile EEPROM memory for storage of important parameters such as battery chemistry, battery capacity, charging methodology and assembly date. Information is sent to/from the DS2438 over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS2438. This means that battery packs need only have three output connectors: battery power, ground, and the 1-Wire interface.


    PINSYMBOLDESCRIPTION
    1GNDGround
    2VSENS+Battery Input: connection for battery current to be monitored (see text)
    3VSENS-Battery Input: connection for battery current to be monitored (see text)
    4VADADC Input: input for general purpose A/D
    5VDDVDD Pin: input supply voltage
    6,7NCNo Connect
    8DQData Input/Out: for 1-Wire operation: Open drain

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