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BQ33100: Alternate products similar to this

Nosherwan Ahmed
Prodigy 170 points
Part Number: BQ33100

Hello,

I was wondering if there are alternative for Super Capacitor Battery Management Units. I can not use this part due to constraints in the design

Thanks

  • 0
    TI__Mastermind 25955 points
    Hi Nosherwan,

    So we can attempt to give a recommendation, please describe the application, and constraints.

    What are your expectations for the device?

    Sincerely,
    Bryan Kahler
  • 0 in reply to Bryan Kahler
    Prodigy 170 points
    Hi Brian,

    We are trying to use a super capacitor as a secondary battery for a X-Ray Detector, hence we need a battery management unit for super capacitor. Our expectations are:
    - Charging and discharging monitoring and control
    - Overvoltage, undervoltage and overcurrent protection
    - LED display support for battery capacity
    - I2C support
    - Small size
  • 0 in reply to Nosherwan Ahmed
    TI__Mastermind 25955 points
    Hi Nosherwan,

    Thank you for the update.

    Which constraints are preventing the use of the bq33100? What Is the max voltage of the super caps and how many super-capacitors will be utilized in series and parallel?

    Sincerely,
    Bryan Kahler
  • 0 in reply to Bryan Kahler
    Prodigy 170 points

    Hi Bryan

    The main concern from our designer is that bq33100 seems a bit old judging by the units in stock and the last data sheet revision. We are a bit worried that this IC might go out of production and since this is going to be a part of a medical device, this might have some effect later on.

    Another concern is the communication protocol. Our current design features only I2C and the data sheet from bq33100 says that it supports SMBus. 

     We are looking at 12V output voltage from the supercapacitor battery pack and we are currently in the process of finalizing the super capacitor pack right now.

    Thanks 

  • 0 in reply to Nosherwan Ahmed
    TI__Mastermind 25955 points
    Hi Nosherwan,

    This device is current and is not NRND (not recommended for new designs). It is current recommended for designs. TI adheres to J-STD-048 regarding the product obsolescence process ( www.ti.com/.../product-change-notification.html ).

    With respect to the communication protocol, the bq33100 uses SMBus v1.1 for host communications although an SMBus slave can be communicated with through an I2C master.

    With respect to the 12V output voltage, the bq33100 can operate with up to 5 supercapacitors in series with cell balancing or more in a stacked mode as long as 8V is not exceeded between each of the 5 cell connections.

    Sincerely,
    Bryan Kahler