Switched 3.3v switched dc dc regulator circuit The dc 12 volt voltage is reduced by 3.3 volts. LM2575 operating frequency 52 kHz output 80% power 1 amp.
LM2575 step-down (buck) switching regulator
The LM2575 series regulators are designed to provide a reliable, reliable and efficient operation . These devices are available in 3.3V, 5V, 12V, 15V, and an adjustable output version.