Allegro MicroSystems A4405
The A4405 is an automotive power management IC that uses a high frequency constant on-time 5.45 V pre-regulator to supply two internal 5 V linear| Part No. | A4405 |
|---|---|
| Datasheet | A4405 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Constant On-Time Buck Regulator |
| Buy | Stock & Price |
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
● Valley current sensing achieves shortest buck on-times
● 50 V absolute maximum input voltage for surges
● 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 protection Continued on the next page… Package: 20-pin TSSOP with exposed thermal pad (suffix LP) Not to scale
DESCRIPTION
