In view of the fact that more and more posts involve people doing automotive related projects, some people may find these useful for some posts:
Fixed LDO Regulators in 1.5V to 5V version by DIODES Inc.AP2205 LDO Regulator for Noise-Sensitive Industrial Applications
Wide input voltage: 2.3 V to 24 V; covers 5 V, 9 V, and 12 V power rails with good transient withstand
Wide output voltage: ADJ 1.24 V to 22 V; fixed 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V, 3.3 V, and 5.0 V cover standard I/O voltage levels