TL431A-Q1: Vref of TL431A-Q1

takahiko yokota

Mastermind 7135 points

Part Number: TL431A-Q1

I have a question about TL431A-Q1.

If the Vka dropped under Vref_min, how is this device's output?

Best regards,

Yokota

over 6 years ago

0 Abhinav.Sharma over 6 years ago

TI__Genius 9375 points

Yokota-san,

The output will be undefined and the operating condition for VKA is recommended at minimum of VREF for this reason.

Thanks,
Abhinav.

0 takahiko yokota over 6 years ago in reply to Abhinav.Sharma

Mastermind 7135 points

Hi Abhinav-san

Thank you for the information.

Could you tell me the reason the output will be undefined?

Best regards,

Yokota

0 takahiko yokota over 6 years ago in reply to takahiko yokota

Mastermind 7135 points

Hi Abhinav-san

Could I get answer of the output being undefined?

Best regards,

Yokota

0 Abhinav.Sharma over 6 years ago in reply to takahiko yokota

TI__Genius 9375 points

Yokota-san,

There are not many cases when VKA could be below VREF. This should seemingly only occur if there is not enough IKA to correctly operate or if it is used in open loop. Do you have any further information about the use case?

Thanks,

Abhinav.

Power management

Power management forum

TL431A-Q1: Vref of TL431A-Q1