Alpha & Omega Semiconductor AOZ3011PI

Description

The AOZ3011PI demo board is a fully assembled and tested circuit board built with the AOZ3011PI buck regulator IC. It outputs an adjustable voltage up to 3A of continuous current. The evaluation board requires an input voltage from 4.5 to 18V. The output voltage is preset at 3.3V and can be adjusted down to 0.8V.

The AOZ3011PI demo circuit has features like current limit, short circuit protection, input under voltage lock out, internal soft start and thermal shut down. It operates at a fixed 500 kHz switching frequency. The integrated internal MOSFETs minimize component count, board area and total cost.

The demo board demonstrates the simple buck converter design. Only one resistor value change is needed for different output voltage designs.

Features

• 4.5V to 18V operating input voltage range
• Synchronous Buck: 70 mΩ internal high-side switch and 40 mΩ Internal low-side switch (at 12V)
• Up to 95% efficiency
• External soft start
• Output voltage adjustable to 0.8V
• 3A continuous output current
• 500kHz PWM operation
• Cycle-by-cycle current limit
• Pre-bias start-up
• Short-circuit protection
• Thermal shutdown
• Exposed pad SO-8 packageREMARK:-AVAILABLE IN FOLDER

Typical applications

• LCD TV
• Set top boxes
• Cable modems
• Point of load DC/DC converters
• DVD / Blu-ray players/recorders