IC-Hersteller Allegro Microsystems

IC-Hersteller (103)

Allegro Microsystems A4450

Buck-Boost Controller with Integrated Buck MOSFET

Details

TopologieAbwärts- und Aufwärtswandler
Eingangsspannung3-36 V
Ausgang 18 V / 1 A
IC-Revision--

Beschreibung

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.It is Allegro / A4450 / 8V-500kHz/1A / Buck Boost

Eigenschaften

Automotive AEC-Q100 qualified

  • Wide operating range of 3 to 36 VIN, 40 VIN maximum,covers automotive stop/start, cold crank, double battery,and load dump
  • Regulated output can range from 3 to 8 V at up to 1 A DC
  • Adjustable PWM switching frequency:250 kHz to 2.2 MHz
  • PWM frequency can be synchronized to external clock:250 kHz to 2.4 MHz
  • Frequency dithering helps reduce EMI/EMC
  • Undervoltage protection
  • Pin-to-pin and pin-to-ground tolerant at every pin
  • Thermal shutdown protection
  • Operating junction temperature range −40°C to 150°C

Typische Anwendungen

  • Instrument Clusters
  • Control Modules
  • Infotainment

Weiterführende Informationen

Artikeldaten

Artikel Nr.
Daten­blatt
Simu­lation
Downloads
Status
Produktserie
L(µH)
ISAT,10%(A)
ISAT,30%(A)
IR,40K(A)
IRP,40K(A)
RDC max.(mΩ)
fres(MHz)
Bauform
Version
Muster
WE-PD Speicherdrossel, 47 µH, 4.5 A
Simu­lation
Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.
Induktivität47 µH
Sättigungsstrom 14.5 A
Sättigungsstrom @ 30%5.5 A
Nennstrom3.8 A
Performance Nennstrom4.9 A
Gleichstromwiderstand60 mΩ
Eigenresonanzfrequenz6.5 MHz
Bauform1210 
VersionGestanzt