AOZ1051PI

The AOZ1051PI is a high efficiency, easy to use, 3 A synchronous buck regulator. The AOZ1051PI works from 4.5 V to 18 V input voltage range, and provides up to 3 A of continuous output current with an output voltage adjustable down to 0.8 V. The AOZ1051PI comes in an exposed pad SO - 8 package and is rated over a - 40 °C to + 85 °C operating ambient temperature range. The AOZ1051PI is a current - mode step down regulator with an integrated high - side PMOS switch and a low - side NMOS switch. The AOZ1051PI operates from a 4.5 V to 18 V input voltage range and supplies up to 3 A of load current. Features include enable control, power - on reset, input under voltage lockout, output over voltage protection, external soft - start and thermal shut down. The AOZ1051PI is available in an exposed pad SO - 8 package.

Applications

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

Key features

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