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# MC33063A: Vf voltage at +85deg

Part Number: MC33063A

Dear Specialists,

My customer is considering MC33063A and has a question.

I would be grateful if you could advise.

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Vth-Full range is described in the data sheet P.5 7.6 Electrical characteristics.(1.21Vmin ~ 1.29Vmax)

Which is MIN (1.21V) or MAX (1.29) when the ambient temperature is high (85 ° C)?

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Best regards,

Shinichi

• Hi Shinichi,

Thank you for using E2E forums, regarding your question I am a little bit confused but I think you are asking is the Vth min 1.21V and 1.29V max is for what Operating free-air temperature, and the answer for that would be the full range of TA, which is -40 C to 85 C. So for 85 C of TA the Vth max is 1.29 V and min is 1.21 V.

BR,

Haroon

• Hi Haroon,

I understand Vth(max) at 85deg can be either 1.21V or 1.29V.

It's like a offset voltage of ope-amp.

I appreciate your great help and cooperation.

Best regards,

Shinichi

• Hi Shinichi,

Thank you and Please let me know if there any further questions.

BR,

Haroon

• Hi Haroon,