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How to configure LTM4641 for VOUT=5V in LT-Spice

Question asked by keithp on Jul 12, 2018
Latest reply on Jul 13, 2018 by mike.shriver

Simulating an LTM4641 in LT-Spice; output voltage should be 5V but LT-Spice shows ~9V output after overshooting up to about 9.8V.

 

Using the LT-Spice model downloaded from http://www.analog.com/media/en/simulation-models/LTspice-demo-circuits/LTM4641_DC1543A.asc  then modifying RSET1a, RSET1b and RSET2 to values given in the datasheet. Also increased the load resistor appropriately. Datasheet values work up until 3.3V, anything over 3.3V causes very high output voltages (higher than the LTM4641 should be able to produce.)

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