SNVS609K December 2008 – June 2022 LM25088 , LM25088-Q1
PRODUCTION DATA
The soft-start (SS) feature forces the output to rise linearly until it reaches the steady-state operating voltage set by the feedback resistors. The LM25088 regulates the FB pin to the SS pin voltage or the internal 1.205-V reference, whichever is lower. At the beginning of the soft-start sequence, VSS = 0 V and, an internal 11-µA current source gradually increases the voltage of the external soft-start capacitor (CSS). An internal amplifier clamps the SS pin voltage at 120 mV above the FB voltage. This feature provides soft-start controlled recovery with reduced output overshoot in the event that the output voltage momentarily dips out of regulation.