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IC manufacturers Alpha & Omega Semiconductor

IC manufacturers (84)

Alpha & Omega Semiconductor AOZ1021AI | Demoboard AOZ1021AI-EVB

EZBuck™ 3A Synchronous Buck Regulator Evaluation Board Note


TopologyBuck Converter
Input voltage4.5-16 V
Output 13.3 V / 3 A
IC revision1.1


The AOZ1021AI evaluation board is a fully assembledand tested circuit board built with the AOZ1021AI buckregulator IC. It outputs an adjustable voltage up to 3A ofcontinuous current. The evaluation board requires aninput voltage from 4.5 to 16V. The output voltage ispreset at 3.3V and can be adjusted down to 0.8V.The AOZ1021AI-EVB circuit has features like currentlimit, short circuit protection, input under voltage lock out,internal soft start and thermal shut down. It operates at afixed 500kHz switching frequency. The integratedinternal MOSFETs minimize component count, boardarea and total cost.The AOZ1021AI-EVB demonstrates the simple buckconverter design. Only one resistor value change isneeded for different output voltage designs. TheAOZ1021AI-EVB also supports single layer boarddesign.


4.5V to 16V operating input voltage range

Output voltage preset to 3.3V, adjustable to as low as0.8V

3A continuous output current

Fixed 500kHz PWM operation

Internal soft start

Cycle-by-cycle current limit

Short-circuit protection

Thermal shutdown

Enables single layer board design

Typical applications

  • Telecom/Networking/Datacom equipment
  • LCD panels
  • DVD drives and HDD
  • PCIe graphics cards
  • Point of load DC/DC conversion
  • Cable modems
  • Set top boxes