AN022 High Side Driver for Buck Converter with an LDO
Introduction
Most boost converters have been applied to step-up voltage applications, such as the PDA, N/B PC, cellular phone, palmtop computer, GPS, camcorder, portable DVD, toy, and DSC, to elevate a low voltage to a high voltage to provide low quiescent current and high efficiency
regulator in the recent years.
Yet, technically, the boost converter does not supply applications of high loading current today.
Also, the LDO usually can not transform to a relatively high energy.
AIC1630A is not only a boost converter but also an application of step-down and a low-dropout function.
The circuit, shown as Fig.
1, can step down from 5V or 12V...