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Toshiba Launches Two New High-Power LED Drivers

Toshiba America Electronic Components has announced the launch of two new additions to its current line of LED drivers. The TB62D701 and TB62771 are LED drivers that can be used for lighting applications such as monitor backlights, traffic signals, LCD TVs and signage.

While the TB62D701 can accommodate eight metal oxide semi-conductor field effect transistors (MOSFET) with an individual capacity of 150 mA and a total power of 58V, the TB62771 can support four MOSFETs with an individual capacity of 200 mA and a total power of 45V.

Both the drivers use Toshiba’s mixed-signal sub-micron silicon process technology which combines the MOSFETs into one chip to provide more functionality. This feature enables engineers to use lesser number of components while designing their products and leads to savings on cost of materials. Both the drivers can pick up low signals of up to 500ns. This capability of dimming at high resolutions offers a greater ratio of contrast in high definition video and ensures low levels of power consumption when the brightness is low. The eight separate PWM inputs in the TB65D701 can be used to program every channel individually. This feature is particularly useful for applications such as mood lighting, local dimming, colour mixing and phase shift control.

While the TB62D701 is available in a 7mmx7mm QFN-48 package and an HTSSOP 48-lead package for commercial applications, the TB62271 comes with a 4mmx4mm compact QFN-20 package. The TB62271 is commercially available at present. However large scale production of the TB62D701 will commence by December 2011.



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