ZHCSIR1C June 2018 – May 2021 LM2775-Q1
PRODUCTION DATA
The very low input current ripple of the LM2775-Q1, resulting from internal pre-regulation, adds minimal noise to the input line. The core of the device is very similar to that of a basic switched capacitor doubler: it is composed of four switches and a flying capacitor (external). Regulation is achieved by controlling the current through the two switches connected to the VIN pin (one switch in each phase). The regulation is done before the voltage doubling, giving rise to the term "pre-regulation". It is pre-regulation that eliminates most of the input current ripple that is a typical and undesirable characteristic of a many switched capacitor converters.