A8651 Buck Regulator

Allegro's A8651 dual-synchronous, low-voltage buck regulator for automotive applications

Image of Allegro MicroSystems' A8651 Buck RegulatorAllegro MicroSystems' A8651 is a dual 2 A, low Vin, synchronous regulator. The A8651 has adjustable frequency, integrates a high-side, P-channel MOSFET and a low-side, N-channel MOSFET. The A8651 incorporates current-mode control to provide simple compensation, excellent loop stability. The A8651 utilizes external compensation to accommodate a wide range of power components to optimize for transient response without sacrificing stability. The A8651 regulates input voltages from 2.5 V to 5.5 V, down to output voltages as low as 0.8 V, and is able to supply up to 2 A of load current per regulator.

Features and Benefits Applications
  • Operating voltage range: 2.5 V to 5.5 V
  • UVLO STOP threshold is at 2.0 VTYP, 2.25 VMAX
  • Dual outputs with up to 2 A output current per regulator
  • Adjustable output voltage as low as 0.8 V
  • Internal 80/55 mΩ high and low-side switching MOSFET
  • Adjustable switching frequency (FSW): 0.35 to 2.2 MHz
  • Automotive infotainment LCD displays and audio
  • Post regulators for automotive infotainment and Advanced Driver Assistance Systems (ADAS)
A8651 Buck Regulator
Manufacturer Part NumberDescriptionTypeOutput TypeAvailable QuantityBuy Now
A8651KLPTR-TIC REG BUCK SYNC ADJ 2A 20TSSOPStep-Down (Buck)Adjustable8000 - Immediate
Demo Board for A8651
Manufacturer Part NumberDescriptionMain PurposeOutputs and TypeAvailable QuantityBuy Now
APEK8651KLP-01-MHBOARD DEMO FOR A8651DC/DC, Step Down2, Non-Isolated5 - Immediate
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Published: 2014-03-03