Allegro Microsystems


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

Topologie: Buck
Eingangsspannung (min.): 4.00 V
Eingangsspannung (max.): 35.00 V
Schaltfrequenz (min.): 300.00 kHz
Schaltfrequenz (max.): 550.00 kHz
Ausgang 1: 3.30 V / 2.000 A

Erstveröffentlichung am 14.03.2016, Version 3


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.


  • Automotive AEC-Q100 qualified Withstands surge input to 40 VIN for load dump Operates down to 3.4 VIN (typ), 3.6 VIN (max) for idle stop Utilizes pulse frequency modulation (PFM) for low IQ mode Function options: Selectable PWM / Low IQ PFM mode, or Selectable 10 μA Sleep mode (automatic PWM / Low IQ PFM mode selection) Fixed output voltage options: 3.3 V or 5 V with ±1.0% accuracy Delivers up to 2 A of output current Integrated 110 mΩ high-side MOSFET Adjustable switching frequency from 300 to 550 kHz (to 605 kHz with sync) EMI Reduction Features: Frequency dithering Controlled switching node External synchronization capability Active low NPOR output with 7.5 ms delay Pre-bias startup capable: VOUT increases monotonically, will not cause a reset External compensation for maximum flexibility Stable with ceramic or electrolytic output capacitors Internally fixed soft start time of 5 ms Pulse-by-pulse current limit, hiccup mode short circuit, and thermal protections Pin open/short and component fault tolerant
  • 40°C to 150°C operating junction temperature range Thermally enhanced SOIC-10 surface mount package


  Artikel Nr. SPEC Produktserie L
RDC typ.
RDC max.
Bauform Version Muster
7447713082 PDF WE-PD SMT-Speicherdrossel 8.2 3 4.7 41 49 30 1030 Performance