Publisher Summary This chapter addresses power supply design issues for analog systems, including op amps, analog multiplexers, ADCs, and DACs taking into account the regulator types most likely to be used. The section, linear IC regulation discusses the topics of some linear voltage regulator basics, pass devices, ±15 V regulator using adjustable voltage ICs, and low dropout regulator architectures. Next, the topics of charge-pump voltage converters, regulated output charge voltage converters, linear post regulator for switching regulators, ground linear and switching regulators, power supply noise reduction and filtering are presented.