Allegro Microsystems


Buck-Boost Controller with Integrated Buck MOSFET

Topologie: Buck-Boost
Eingangsspannung (min.): 3.00 V
Eingangsspannung (max.): 36.00 V
Ausgang 1: 5.00 V / 1.000 A


The A4450 is a power management IC that can implementeither a buck or buck-boost regulator to efficiently convertautomotive battery voltages into a tightly regulated voltage. Itincludes control, diagnostics, and protection functions


  • Automotive AEC-Q100 qualifiedWide operating range of 3 to 36 VIN, 40 VIN maximum, covers automotive stop/start, cold crank, double battery, and load dumpRegulated output can range from 3 to 8 V at up to 1 A DCAdjustable PWM switching frequency: 250 kHz to 2.2 MHzPWM frequency can be synchronized to external clock: 250 kHz to 2.4 MHzFrequency dithering helps reduce EMI/EMCUndervoltage protectionPin-to-pin and pin-to-ground tolerant at every pinThermal shutdown protectionOperating junction temperature range −40°C to 150°C


  Artikel Nr. SPEC Produktserie L
RDC typ.
RDC max.
Bauform Version Muster
7447709330 PDF WE-PD SMT-Speicherdrossel 33 4.2 5.5 37 45 8.5 1210 Standard