SNVS787I January 2012 – August 2021 LM5018
The feedback voltage at FB is compared to an internal 1.62 V reference. If the voltage at FB rises above 1.62 V, the on-time pulse is immediately terminated. This condition can occur if the input voltage and the output load changes suddenly. The high-side switch does not turn on again until the voltage at FB falls below 1.225 V.