AOZ6682/3CI – High Efficiency Synchronous Buck Regulators with Low Quiescent Current for Consumer Electronics Applications

Alpha and Omega Semiconductors have introduced 18V, 2A and 3A high efficiency, simple to use synchronous buck regulators namely AOZ6682CI and AOZ6683CI. Both the devices are available in an ultra-thin thermally enhanced TSOT23-6 package and they 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.

AOZ6682CI and AOZ6683CI are designed with a low resistance synchronous buck power stage that enables up to 95% efficiency. As they are thermally enhanced, they achieve 10°C cooler operation at full load compared to similar competing devices. When the device is operating under heavy load, they operates at 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 200uA, allows the buck converter design to achieve industry-leading efficiencies of 89% at light loads.

Features of AOZ6682CI Synchronous Buck Regulator

• 4.5V to 18V operating input voltage range
• Synchronous Buck: 125mΩ internal high-side switch and 55mΩ internal low-side switch
• Pulse energy mode for high light-load efficiency(Vin=12V, Vo=5V, 89% @10mA) 
• Output voltage adjustable to 0.8V 
• 2A continuous output current 
• 750kHz PWM operation
• Internal compensation
•  Internal Soft Start
• Cycle-by-cycle current limit 
• Pre-bias start-up
• Short-circuit protection 
• Thermal shutdown

Note: Complete technical details about AOZ6682CI can be found in the datasheet linked at the bottom of this page.

Features of AOZ6683CI Synchronous Buck Regulator

• 4.5V to 18V operating input voltage range 
• Synchronous Buck: 145mΩ internal high-side switch and 80mΩ Internal low-side switch
• Pulse Energy Mode for light-load efficiency. (Vin=12V, Vo=5V, 87%@10mA)
• Output voltage adjustable to 0.6V
• 3A continuous output current
• 750kHz PWM operation
• External compensation
• Internal Soft Start
• Cycle-by-cycle current limit
• Pre-bias start-up
• Short-circuit protection
• Thermal shutdown

For more information about AOZ6682CI and AOZ6683CI, visit the official website of Alpha and Omega Semiconductor Limited.