Allegro Microsystems

A8591

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.): 2400.00 kHz
Ausgang 1: 5.00 V / 2.000 A

Beschreibung

It is a wide input voltage Buck converter controller, capable to delivering 2A from 4-35VSwitching Freq. is 300kHz and 2Mhz

Merkmale

  • 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 mode10 μA Sleep mode (automatic PWM / Low-IQ PFM mode selection)Fixed output voltage options: 3.3 or 5 V with ±1% accuracyDelivers up to 2 A of output currentIntegrated 110 mΩ high-side MOSFETAdjustable switching frequency from 300 kHz to 2.4 MHzEMI reduction features: Frequency ditheringControlled switching nodeExternal synchronization capabilityMaximum duty cycle for low dropoutActive 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 DFN-10 surface-mount package

Artikel

  Artikel Nr. SPEC Produktserie L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Bauform Version Muster
74437346047 PDF WE-LHMI SMT Speicherdrossel 4.7 3.8 12 37 40 22 SMT
744770122 PDF WE-PD SMT-Speicherdrossel 22 4.1 5 33 43 12 1280 Standard

Weitere Anwendungen und Artikel von Würth Elektronik zu diesem IC

  • A8591
    Topologie: Buck, Eingangsspannung (min.): 4.00 V, Eingangsspannung (max.): 35.00 V, Schaltfrequenz (min.): 300.00 kHz, Schaltfrequenz (max.): 2400.00 kHz, Ausgang 1: 5.00 V / 2.000 A