Alpha and Omega Semiconductor Introduces 18V 2A, and 3A EZBuck

Alpha and Omega Semiconductor Introduces 18V 2A, and 3A EZBuck

Synchronous DC/DC Buck Regulators Feature Lower Quiescent Current and Proprietary Light Load Mode to Achieve up to 6% Higher Efficiency in Standby Mode

Alpha and Omega Semiconductor (AOS) introduced AOZ6682CI and AOZ6683CI. These devices are high efficiency, simple-to-use synchronous buck regulators. The AOZ6682CI and AOZ6683CI are both available in an ultra-thin, thermally enhanced TSOT23-6 package and deliver 2 A and 3 A output current, respectively. The new devices offer high efficiency over the full load range, allowing greener power conversion for a variety of consumer electronics applications such as LCD TVs, set-top boxes, high definition Blu-Ray™ Disc Players and Networking terminals.

The AOZ6682CI’s Efficiency vs Output Current. VIN = 12 V.

The new devices incorporate a low resistance synchronous buck power stage that enables up to 95% efficiency. Combined with a thermally enhanced package, the AOZ6682CI and AOZ6683CI achieve 10 °C cooler operation at full load compared to similar competing devices. Under heavy load conditions, the devices operate in a fixed frequency continuous-conduction mode (CCM). At light loads or in standby mode, the devices employ a proprietary pulse energy mode (PEM) control scheme. This control scheme and low quiescent current of 200 µA, allows the buck converter design to achieve industry-leading efficiencies of 89% at light loads.

Pricing and Availability

The AOZ6682CI and the AOZ6683CI are immediately available in production quantities with a lead time of 12 weeks. The unit price is $0.42 for the AOZ6682CI and $0.52 for the AOZ6683CI in 1000 pc quantities.

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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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