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USB switches tout improved power dissipation

Posted: 07 May 2009 ?? ?Print Version ?Bookmark and Share

Keywords:USB? power switch? on-resistance?

Diodes Inc. has launched the AP21x6 family of dual USB power switches for STBs, LCD TV and monitors, HDTV, residential gateway and ADSL, laptop and server. Application areas include USB port protection, heavy capacitive loads, short-circuit protection and over-current protection.

Expanding on the AP21x1/x2 product family, the AP21x6 family offers reduced footprint, improved switch on-resistance and better power dissipation than similar devices in the market. These integrated high-side power switches are optimized for self-powered and bus-powered USB and other hot-swap applications. The family of devices complies with all USB standards and is available with both polarities of Enable input. The AP21x6 family provides a cost effective, small form-factor implementation that offers complete protection for USB ports in different systems.

The AP21x6 family is form, fit and function compatible with industry standard dual channel devices. Offered in SO8 packaging, these devices are rated for commercial applications. The power switches are also available in thermally enhanced MSOP-8L-EP packages, and are specified for operation over industrial temperature range of -40C to +85C. Diodes offers extended output current options at 0.5-, 1- and 1.5A in both footprints, enabling these devices to be used to protect multiple USB ports for space conscious and low cost solutions.

In addition, the AP21x6 family offers faster response time, more accurate current limiting protection, and reverse current blocking compared to similar devices in the market. Ensuring public safety and confidence while reducing costs and improving quality, the family meets UL's rigorous safety standards, file number E233275; and Nemko IEC 60950-1 CB Scheme.

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