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AMC1304L25: LDOIN Pin and VCAP Pin

Part Number: AMC1304L25
Other Parts Discussed in Thread: AMC1305L25

Dear Expert,

To do a dual design between AMC1304L25 and AMC1305L25, Can AMC1304L25 LDOIN left floating and VCAP connect to external 5V or 3.3V power supply?

Thank you,


  • Hi Dylan,

    To implement a dual design with the AMC1304L25 and AMC1305L25, we do not recommend leaving pin 6 (LDOIN) floating.  We recommend using both LDOIN and VCAP capacitor footprints and then a zero ohm resistor to divert the supply to pin 6 or pin 7 as needed.