The SC21154 is an ultra high efficiency 1.2A DC/DC buck
regulator available in a small MLPD package. These features
make the SC21154 perfect for small form factor consumer
applications where high efficiency is essential.
SC21154 is an Adaptive On-Time 4MHz switching regulator
at full load conditions. Under light load conditions it
transitions into PFM Power Save Mode and reduces switching
frequency thus saving energy. High switching frequency
operation allows the use of a very small 0.47μH
inductor along with small input and output capacitors to
minimize overall circuit size.