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A8591 - 2A Buck Regulator

Description

TheA8591 is designed to provide the power supply requirements of next generation car audio and infotainment systems.

The A8591 provides all the control and protection circuitry to produce a high-current regulator with ±1% output voltage accuracy.

Features

  • 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.
  • 10 μA Sleep mode (automatic PWM / Low-IQ PFM mode selection).
  • Fixed output voltage options: 3.3 or 5 V with ±1% accuracy.
  • Delivers up to 2 A of output current.
  • Integrated 110 mΩ high-side MOSFET.
  • Adjustable switching fr.

📥 Download Datasheet

Datasheet Details

Part number A8591
Manufacturer Allegro
File Size 3.07 MB
Description 2A Buck Regulator
Datasheet download datasheet A8591 Datasheet

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Full PDF Text Transcription

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A8591 Wide Input Voltage, 2 A Buck Regulator Family with Low-IQ Mode FEATURES AND BENEFITS • 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 • 10 μA Sleep mode (automatic PWM / Low-IQ PFM mode selection) • Fixed output voltage options: 3.3 or 5 V with ±1% accuracy • Delivers up to 2 A of output current • Integrated 110 mΩ high-side MOSFET • Adjustable switching frequency from 300 kHz to 2.4 MHz • EMI reduction features: □□Frequency dithering □□Controlled switching node • External synchronization capability • Maximum duty cycle for low dropout • Active low NPOR output with 7.
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