PREMA Semiconductor GmbH
PREMA PR5101 and PR5201 Photosensor ICs for Optical Quadrature Encoders can be used in a wide range of encoders. They excel with quick assembly, high resolutions without interpolation, an innovative method to produce a sharp Z (index) pulse, and high performance of photocurrent amplifiers allowing a low LED current. (read more)
PREMA will be exhibiting at the "electronica China 2015", in Shanghai March 17-19, 2015. We cordially invite you to visit us in Hall E3/Booth #: 3336 Shanghai New International Exhibition Centre. We'll exhibit our new LED drivers suited for retrofit lamps. (read more)
The high voltage operational amplifier PR2202 works for supply voltages of up to 80V single supply or up to ±40V and a maximum output current of ±6mA. The temperature increase of the component remains small in spite of the high voltages due to the low quiescent current of only 500µA. (read more)
PR4101 is a buckdriver for up to 40V input voltage. Its versatility and its dimming input make it ideal for halogen lamp replacement and general lighting. PR4101 is offered in SO-08 and SO-14 package, as well as a smaller variant in a tiny SOT23-5L package. Versatility and high power are key features of these LED drivers, which can also be used as proven standard cells in an ASIC project. (read more)
PR4401 andPR4402 are LED boost converters in a tinySOT23 package that drive white LEDs from a single battery cell. Output currents of 20mA (PR 4401) and40mA (PR 4402) can be achieved. The only other component needed is an inductor. A cleverly devised control circuit produces a constant output current. Maximum performance at minimum space and cost is the goal of this smart IC.
The... (read more)