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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 programmable
current limit and foldback short circuit protection • 1.2 V/1.5 V/1.
A4407 Datasheet
