AnsweredAssumed Answered

output voltage tolerance calculation ADP1762-ADJ

Question asked by Jonas.grue on Nov 27, 2017
Latest reply on Nov 29, 2017 by Errgy

Hello,

 

I would like use ADP1762 adjustable LDO.

My application needs power supply +0.975V +-0.025V (≙ accuracy 2.56%) at 1.7A.
Supply voltage tolerance sourced to LDO input is +1.8V +-0.1V.
Ambient temperature definition from 0°C to +40°C.

How I have to calculate LDO output voltage tolerance?
Is it possible to achieve requirement with ADP1762 adjustable device?
Do I need Radj with less then 1% tolererance?

My worst case tolerance calculation resulting in more then 4% exclusive Radj tolerance.

It seems to be unusual much.

 

Best regards
Andreas

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