A4407
2.
2 MHz Constant On-Time Buck
Regulator With Two External and Two Internal Linear
Regulators
Features and Benefits
• AEC-Q100 Grade 0 qualified • Internal buck pre-
regulator followed by LDO outputs • 5.
5 to 36 V VIN operating range (50 V maximum);
for start/stop, cold crank, and load dump requirements • Constant on-time (COT) buck pre-
regulator • Valley current sensing achieves shortest buck on-times • 2.
2 MHz (VIN - adjusted) switching frequency • 5 V internal low-dropout tracking linear
regulator with
foldback short circuit and short-to-battery protections • 5 V internal low-dropout linear
regulator with foldback
short circuit protection • 3.
3 V external FET controller/driver with p...