LDO

Challenges: Tolerant to car battery voltage fluctuations and load dump requirements. Typically used to power Audio and other noise-sensitive applications. Some application require operation through cold crank. Consider stepping down with a DC/DC first to decrease heat losses significantly. Note some linear regulators include supervisory functions and vice versa.

DATA SHEETS
Display	Title/Parts	Key Advantages
QV  PDF	4V to 72V Input LDOs with Boost Preregulator MAX5092, MAX5093	Automotive LDOs with Boost Preregulators Operate Seamlessly from 4V Cold Crank to 72V Load Dump
QV  PDF	40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO MAX15006, MAX15007	Low 9µA Quiescent-Current Linear Regulators Ideal for Always-On Automotive Applications
QV  PDF	1A, MicroCap, Low-Dropout, Linear Regulator MAX8869	Compact, 1A, Low-Dropout Linear Regulator Requires Just 1µF Output Capacitor!
QV  PDF	12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK MAX8880, MAX8881
QV  PDF	Low-Dropout, 300mA Linear Regulator in µMAX MAX8860	Low-Noise, Lowest-Dropout 300mA (Guaranteed) Regulator in µMAX