MOSFETs save device power

Vishay Intertechnology's Siliconix p-channel MOSFETs can turn off features such as the display or the power amplifier when they are not being used.

Vishay Intertechnology's Siliconix p-channel MOSFETs are builton TrenchFET silicon technology and offer maximum on-resistance ratings of 29mohm in the PowerPAK SC-70 package (2.05 x 2.05mm), 80mohm in the standard SC-70 (2.0 x 2.1 mm) and 130mohm in the SC-89 (1.6 x 1.6mm).

The p-channel TrenchFETs will be used for load switching, PA switching and battery switching in portable end products including mobile phones, MP3 players, PDAs and digital still cameras, where their low conduction losses will help to extend battery run times and their miniaturised packages will save valuable board space, allowing increased functionality.

In portable electronic systems, p-channel MOSFETs perform an essential role by turning off features such as the display or the power amplifier when these are not being used, or by switching the system from active mode to sleep mode and thus saving on battery life.

These new Vishay Siliconix devices perform these switching tasks with less power than any previous p-channel power MOSFETs because their very low on-resistance ratings translate directly into lower power conduction losses.

The p-channel TrenchFETs include single-channel devices with breakdown voltage ratings of -12, -20 and -30V.

Offered in the six-pin SC-89, standard SC-70 and PowerPAK SC-70 packages, all these new power MOSFETs are lead-free to meet environmental concerns.

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