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Universal Micro voltage converters suit optical systems

Posted: 19 Nov 2003 ?? ?Print Version ?Bookmark and Share

Keywords:dc-dc voltage converter? universal microelectronics? um3900 series?

Designed to suit telecommunications equipment, networks, and optical systems, the DIP-type 2:1 150W single-output dc-dc voltage converters from Universal Microelectronics Co. Ltd feature short circuit protection, remote on/off control, internal soft start, and under voltage lockout.

The UM3900 series has a 2:1 input voltage range (18V to 36V, or 36V to 72V), and single output of 5V, 3.3V. Measuring 57.9(?)-by-61-by-12.7mm, the product weighs 85g. Other specifications include an efficiency of 90 percent, typical switching frequency of 200kHz, isolation voltage of 1,500Vdc, and typical thermal protection of 110C.

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