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TPA3245: About the operating temperature of TPA3245.

Part Number: TPA3245
Other Parts Discussed in Thread: TPA3255


Is it OK if I use the TPA3245 at -20 ° C to -10 ° C?

I think that there is no problem as the junction temperature of IC rises.

If there is a problem, is there a recommended IC?(Performance equivalent to TPA 3245)

Best regards.

  • Hello,

    I do not think there will be an issue. The datasheet specifies operating junction temperature range to be 0 to 150 degrees C, but as you mention, the temperature of the IC rises when it is active. With thorough testing I think this would be fine. It may depend on your application. For example, it's possible THD performance could be worse at -40.

    I am aware there is a datasheet update in the works for the TPA3255 to operate from -40 to 150. It is from the same family, so the performance will be very similar and it is pin-to-pin compatible.

    Would you mind me asking what your application is?

    Best regards,
  • Hi Dan,

    Thank you for your reply.

    My application is audio amplifier for outdoor use.

    <Specification of environmental temperature.>

     Performance guarantee temperature: -10 ℃ ~ 60 ℃

     Operation guarantee temperature:-20℃~70℃

    Change the operating temperature to "-40 ° C~ 150 ° C",

    are there any plans to update the TPA3245 data sheet?

    End users are worried.

    Best Regards


  • Hi Okaz,
    There are plans to test the TPA3245 to extend the temperature range, but it is further down the roadmap. It may not be done for several more months.
    I've sent you a friendship request on E2E so we can talk more about your application offline. I'm interested in the number of units your expecting and timeline, but I understand you may not want to share that information on a public forum.
    Best regards,