A4411 Overview
A4411 Adjustable Frequency Buck or Buck-Boost Pre-Regulator with a Synchronous Buck, 3 LDOs, Pulse-Width Window Watchdog, NPOR, and POK5V.
A4411 Key Features
- Automotive AEC-Q100 qualified
- 3.5 to 36 VIN operating range, 40 VIN maximum
- Buck or buck-boost pre-regulator (VREG)
- Adjustable PWM switching frequency: 250 kHz to 2.4 MHz
- PWM frequency can be synchronized to external clock
- Synchronous buck regulator (ADJ) delivers 0.8 to 3.3 V
- Two 5 V LDOs for “local” sensors (V5SNR) and
- 5 V internal tracking LDO for remote sensors with foldback short-circuit and short-to-battery protections (V5P)
- TRACK sets FBADJ or V5SNR as the reference for V5P
- Programmable pulse-width window watchdog (PWWD) with scalable activation delay and selectable tolerance