Linear regulators, particularly the precision ones, play some critical role in precision sensors, professional instruments, and medical equipments, which set very stringent requirements for dealing with either expensive systems or life objects. Digital improvements on the conventional linear regulators may sound slightly overkill. But the future need of integrating laboratory or clinical environment with the web shall justify it.
LED is beginning to force even government agencies to take action in setting new regulatory policy for energy consideration. As such, constant current drivers are covered in this part.