ZHCSJY0B June 2012 – June 2019 LMR12015 , LMR12020
PRODUCTION DATA.
The LMR12015/20 has a fixed internal soft start of 1 ms (typical). During soft start, the error amplifier reference voltage ramps from 0 V to its nominal value of 1 V in approximately 1 ms. This forces the regulator output to ramp in a controlled fashion, which helps reduce inrush current. Upon soft start the device initially is in frequency foldback, and the frequency rises as FB rises. The regulator will gradually rise to 2 MHz. The LMR12015/20 allows synchronization to an external clock at FB > 0.53 V.