LM74720-Q1: LM74720-Q1

Tsutomu Hibi

Part Number: LM74720-Q1

Tool/software:

Dear TI team,

We are considering using this IC in an overvoltage protection circuit for the input of a control circuit.

However, we would like to stop the circuit by detecting the overvoltage with a uC while protecting the circuit behind.

For example, by connecting VOUT to the OVP pin, can we make it work like a latch operation?

Best regards,

Tsutomu Hibi.

0 Shiven Dhir 4 months ago

Hi Hibi,

You will have to add external latch circuit to achieve this. IC does not have a latch function integrated.

Regards,

Shiven Dhir

0 Tsutomu Hibi 4 months ago in reply to Shiven Dhir

Dear Shiven-san,

Thank you for your reply.

I would like to confirm to make sure.

If VOUT is connected to OV, can't it work as shown in the following diagram?

Please let us know.

Best regards,

Tsutomu Hibi.

+1 Shiven Dhir 4 months ago in reply to Tsutomu Hibi

Hi Hibi,

Surely that will work as you showed in the diagram. I understood that you need a latch turn off of the device once OV is detected.

Looks like you need OV clamp and not latch.

OV clamp can be achieved with this device.

Regards,

Shiven Dhir

0 Tsutomu Hibi 4 months ago in reply to Shiven Dhir

Dear Shiven-san,

Thank you for your answer.

I understood and it was resolved.

Best regards,

Tsutomu Hibi.

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