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DC/DC PWM Buck Converters

Wed, 09/05/2007 - 11:59am

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e_arrows.jpgdiodesinc2Productive Product: The AP1533 from Diodes, Inc. is a 300 Hz, 1.8A Asynchronous PWM Buck Converter with soft-start function, low ripple noise output, low current consumption, high efficiency, and desirable transient characteristics. The buck converter has a wide input voltage range of 4V to 23V, an adjustable output voltage from 0.8V to 23V, and is suited for applications such as LCD monitors, TVs, DVD/PVR players, set-top boxes, xDSL modems, and networking and telecommunications equipment. The AP1533's duty-cycle varies between 0 percent and 99 percent, depending on the output voltage. It can provide a low noise output current up to 1.8A over a broad range of input voltages. In addition, the voltage lockout circuit of the AP1533 assures that the built-in high-side MOSFET driver remains in the off state whenever the supply voltage drops below 3.3V threshold resuming once the supply voltage rises above 3.5V. This makes the AP1533 suitable for today's energy efficient and environment friendly requirements. Additional features are thermal shutdown and short circuit protection, as well as current limiting.
Diodes, Inc.
805-446-4800, www.diodes.com 

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