SNVS788H January 2012 – August 2021 LM5019
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, the output load, of both, changes suddenly. The high-side switch does not turn on again until the voltage at FB falls below 1.225 V.