Date: 15/07/2010

New 1.4MHz, 1.5A step down converter from Diodes Inc

Diodes Inc. has released the AP5101 buck converter. This step-down converter operates at a fixed switching frequency of 1.4MHz and is rated at 1.5A rated. It is used in products such as set top boxes, modems, and distributed power systems.

The AP5101 converter uses small inductors along with The reduction in size of the inductor and other standard external components resulting from the higher operating frequency, combined with the converter's compact SO-8 packaging and integrated low RDSON power MOSFET switch, means significant board space savings can be achieved. Minimized external component count also provides increased flexibility in circuit design.

Characterized by its very low series resistance, the AP5101 delivers a constant output current up to a peak of 1.5A for efficiency as high as 92%, over a wide input supply range of 4.75V to 22V. Fast transient response eases loop stabilization requirements and the output is adjustable from 0.81V to 15V. The AP5101 is self-protected through cycle-by-cycle current limiting and thermal shut down protection, ensuring long term product reliability. The converter has an enable pin allowing it to be switched off into a standby mode, consuming just 0.1µA.

For more information visit: http://www.diodes.com