LM3880-Q1: maximum pull up resistor for LM3880-Q1

Part Number: LM3880-Q1
Other Parts Discussed in Thread: LM3880

Hello team,

My customer wants to decrease quiescent current at standby situation for LM3880-Q1.

LM3880-Q1 output should be 'L' at standby.

So, The current is needed not only LM3880-Q1 Iq but also though external pull up resistor current.

The datasheet mentions to use 100kohm.

However, the customer wants to decrease the current.

Could you please provide the maximum pull up resistor value for decreasing the current?

Best Regards,

0 yihe over 5 years ago

Hello

If they want to reduce the current, the pull-up source could be different with the source of LM3880.

The leakage of the FLAG is up to 20nA. you have to count the leakage where the flag output is connected.

This would give your the voltage drop on the pull-up resistor during the normal operation.

Regards

Yihe

0 YY over 5 years ago in reply to yihe

Hello Yihe,

Thank you for your quick response.

Understood.

Regards,

Yuki

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