Question: About partial-power-down of TL7700 and TL7733.

Toshiya Hiramatsu

Intellectual 630 points

Other Parts Discussed in Thread: TL7700

Hello!

I have a question of TL7700 and TL7733.

When Vcc=0v,is the voltage applied to SENSE terminal?

Could you please teach me?

Regards,
Toshiya.

over 13 years ago

0 Ron Michallick over 13 years ago

TI__Guru*** 140186 points

Toshiya-san,

I do not understand your question. Please rephrase it and add more details.

Regards,
Ron M.

0 Toshiya Hiramatsu over 13 years ago in reply to Ron Michallick

Intellectual 630 points

Hello Ron-san,

I am sorry in the insufficient explanation.
Could you please see figure below?
And,could you please question me if there is an uncertain point.

Regards,
Toshiya.

0 Ron Michallick over 13 years ago in reply to Toshiya Hiramatsu

TI__Guru*** 140186 points

Toshiya-san,

The TL7700 sense pin blocks current flow from 0 to 40V even if VCC is 0V.

The TL7733 sense pin is the expected constant resistance from 0V to 20V even if VCC is 0V.
The TL7733 resin pin blocks current flow from 0 to 20V even if VCC is 0V.

Regards,
Ron M.

0 Toshiya Hiramatsu over 13 years ago in reply to Ron Michallick

Intellectual 630 points

Hello Ron-san,

Thanks for your response and explanation.

Regards,
Toshiya.

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Question: About partial-power-down of TL7700 and TL7733.