A4406
Constant On-Time Buck
Regulator With One External and One Internal Linear
Regulator
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 • 2.
2 MHz constant on-time buck
regulator • 50 V absolute maximum input voltage for surges • Valley current sensing achieves shortest buck on-times • 5.
5 to 46 V input voltage range • −40ºC to 150ºC junction temperature range • Power-on reset (NPOR pin) with adjustable rising delay • 5 V (V5P pin) internal low dropout tracking
linear
regulator with both overcurrent foldback and short-to-battery p...