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IC-Hersteller Allegro Microsystems

Allegro Microsystems A8585-3

Wide Input Voltage, 2 A Buck Regulator Family with Low IQ Mode

Details

TopologieAbwärtswandler
Eingangsspannung4-35 V
Schaltfrequenz300-550 kHz
Ausgang 13.3 V / 2 A
IC-Revision3

Beschreibung

The A8585 family is designed to provide the power supplyrequirements of next generation car audio and infotainmentsystems. The A8585 family provides all the control andprotection circuitry to produce a high current regulator with±1% output voltage accuracy.

Eigenschaften

Automotive AEC-Q100 qualifiedWithstands surge input to 40 VIN for load dumpOperates down to 3.4 VIN (typ), 3.6 VIN (max) for idle stopUtilizes pulse frequency modulation (PFM) for low IQ modeFunction options: Selectable PWM / Low IQ PFM mode, orSelectable 10 μA Sleep mode (automatic PWM / Low IQ PFM mode selection)

Fixed output voltage options: 3.3 V or 5 V with ±1.0% accuracyDelivers up to 2 A of output currentIntegrated 110 mΩ high-side MOSFETAdjustable switching frequency from 300 to 550 kHz (to 605 kHz with sync)EMI Reduction Features: Frequency ditheringControlled switching node

External synchronization capabilityActive low NPOR output with 7.5 ms delayPre-bias startup capable: VOUT increases monotonically, will not cause a resetExternal compensation for maximum flexibilityStable with ceramic or electrolytic output capacitorsInternally fixed soft start time of 5 msPulse-by-pulse current limit, hiccup mode short circuit, and thermal protectionsPin open/short and component fault tolerant

  • 40°C to 150°C operating junction temperature rangeThermally enhanced SOIC-10 surface mount package

Typische Anwendungen

  • Home Audio
  • Automotive: Instrument Clusters,Audio Systems,Navigation,Industrial
  • Network and Telecom
  • Industrial

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
BauformVersion Muster
7447713082SPEC
8 Dateien WE-PD SMT-Speicherdrossel 8.2 3 4.7 41 49 30 1030 Performance
Artikel Nr. Daten­blatt Simu­lation
7447713082SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
BauformVersion Muster