TMP75C-Q1: Operation less than 1.4V

Masaaki Sugiyama68

Expert 1445 points

Part Number: TMP75C-Q1
Other Parts Discussed in Thread: TMP75C

Dear Support Team;

If Vs is less than 1.4V, what happens to TMP75C-Q1?

And if Vs become 1.4V after less than 1.4V, what happens to TMP75C-Q1?

See the following diagram.

Best Regards,

Masaaki Sugiyama

over 7 years ago

0 Ren Schackmann over 7 years ago

TI__Mastermind 43785 points

Hi Sugiyama-san,

The operation of TMP75C would be unknown below 1.4V. The minimum operating voltage is 1.4V.

The operation of TMP75C would also be unknown after dropping to 1V and returning to 1.4V. This voltage is not low enough to guarantee Power-On Reset will occur.

Thanks,
Ren

0 Masaaki Sugiyama68 over 7 years ago in reply to Ren Schackmann

Expert 1445 points

Dear Ren-san;

I understand unkwon state.

Could you tell me the low enough voltage for Power-On Reset?

Best Regards,

Masaaki Sugiyama

0 Ren Schackmann over 7 years ago in reply to Masaaki Sugiyama68

TI__Mastermind 43785 points

Hi Sugiyama-san,

There is some internal resistance and capacitance which makes up the Power-On Reset detection. The only way to ensure correct operation of this circuit is to reach 0V or very near to it to ensure discharge of this circuit.

Thanks,
Ren

0 Masaaki Sugiyama68 over 7 years ago in reply to Ren Schackmann

Expert 1445 points

Dear Ren-san;

Thank you for your support.

I want Power-On Reset.

Could you tell me the condition which make up Power-On Reset ?

For example, Vcc level =0V and keep time=?s

Best Regards,

Masaaki Sugiyama

0 Ren Schackmann over 7 years ago in reply to Masaaki Sugiyama68

TI__Mastermind 43785 points

Hi Sugiyama-san,

100ms should be sufficient. These are not guaranteed specifications.

Thanks,
Ren

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TMP75C-Q1: Operation less than 1.4V