Batteries and Portable Power

5A DC-DC Regulator with Ultra Pulse Energy Mode

Alpha and Omega Semiconductor Limited (AOS) today announced the release of the AOZ6605, a high-efficiency and simple-to-use synchronous step-down regulator with pwm switching frequency of 650kHz and input voltage range of 4.5V to 18V. The solution is ideal for consumer, networking and industrial applications such as LCD TVs, set-top boxes, cable modems, and power supplies.

Leveraging AOS's co-package EZBuck design, the AOZ6605 integrates a 55mΩ high-side and 12mΩ low-side MOSFET, and provides 5A of continuous output current at over 90% efficiency and maintains it at 86% efficiency while in 10mA light load operation.

When operating in low output current conditions, the AOZ6605 will operate in an ultra pulse energy mode (U-PEM) to obtain high efficiency. Under heavy load steady-state conditions, the AOZ6605 will operate in fixed frequency and Continuous-Conduction Mode (CCM).

"As AOS's latest generation of 5A dc-dc buck converter, AOZ6605 reduces standby current and improves light load efficiency to minimize standby power consumption. With an output voltage adjustable down to 0.6V, AOZ6605 becomes more intuitive and a more applicable dc-dc solution," said Kenny Hu, Power IC Marketing Manager at AOS.

The AOZ6605 is immediately available in production quantities with a lead-time of 12 weeks. The unit price of 1,000 pieces is $1.30.

Alpha and Omega Semiconductor Limited
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