LM2904BA-Q1: Internal clamping diode between IN and V-

Haury Zhou

Part Number: LM2904BA-Q1

Hi team,

Are there internal clamping diode between IN+/- and V-?

Does it need to add the diodes below?

BRs,

Haury

0 Clemens Ladisch over 1 year ago

Guru 281760 points

Yes, these internal diodes exist.

External diodes might be helpful to avoid a current through the internal diodes; see section 2.4 of the Application Design Guidelines for LM324 and LM358 Devices.

+1 Ron Michallick over 1 year ago

Hello Haury,

Internal diodes are present. External diodes will share the input current flow. However voltage more negative than -300mV may cause phase reversal.

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