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ADP125: Protection diode required?

Question asked by phip on Oct 24, 2015
Latest reply on Oct 26, 2015 by phip

Hi everyone,

 

I'm designing a circuit with some ADP125 LDOs for the analog supplies. In the abs. max. ratings, there is a requirement for VOUT:

 

VOUT to GND | -0.3V to VIN

 

This would clearly indicate that the regulator needs a reverse diode from VOUT to VIN, however, this is not present on the evaluation board. Since the pass transistor is a P-channel MOSFET, I'd expect there to be an internal diode anyway. So is there still an external Schottky required?

 

Thanks. Best regards,

Philipp

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