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PREMA Semiconductor GmbH
Buck Converter
PR6502 offers a simple and cost-effective method to deliver up to 3.3V/15mA under these constraints to e.g. a µC and control a relay to switch the load. read more
High Voltage Linear Regulator
The High Voltage Linear Regulator, PR2101 works for supply voltages of 7V to 80V with low quiescent current. read more
Optical Encoder
An arrangement of 3 or more PR5101 can be used as an optical encoder. IC1 sets the reference voltage for the comparators in IC2 and IC3. If a chopper wheel rotates over IC2 and IC3, the movement of th read more
Dual Photo Diode
The PR5001 is a dual-element Si photo diode moulded into a very small plastic leadless optical package. The photo diodes offer a very good symmetry, low dark current and high sensitivity. read more
Low Voltage Boost Driver
The new PR4404 is a LED driver providing more than 150mA out of one battery cell and up to 300mA from two batteries for one to three power LEDs. A hold input allows controlling the LED brightness via read more
10-Channel Constant Current LED Driver
The PR4010 drives up to 10 LEDs of any colour individually. For more LEDs several PR4010 can be cascaded and programmed via one serial interface. In this way it is possible to drive, for example 75 LE read more
LED Buck Drivers
The inductive converter PR4101 drives single or multiple LEDs with currents from 100mA up to several amps, depending on the configuration of external components, from a supply voltage of 9V up to 40V. read more
LED Buck Driver
The LED Buck Driver PR4102 drives single or multiple LEDs with currents from 40mA up to several amps, depending on the configuration of external components, from a supply voltage of 8V up to 23V. read more
Boost LED Driver for Solar Lamps
LED solar lamps operate with automatic LED control depending on the ambient light level. The battery is charged by solar cells. Normally this requires several components like Schottky diodes, capacito read more
Signal Conditioning Strain Gauges
The PR3350 can be used for weighing scales or other applications with sensors connected as a wheatstone bridge in a two-chip solution. This ASIC contains all necessary components for the signal amplif read more
Boost Driver for White LEDs
The core of this Boost Driver consists of a step-up converter with current output, which provides an output voltage of typically 3.6 V for white LEDs. The input voltage can be as low as 0.9V, thus all read more
High Voltage Operational Amplifier
The High Voltage Operational Amplifier, PR2201 works for supply voltages of up to 80V single supply or up to ±40V and a maximum output current of ±6mA. The common mode input voltage covers nearly t read more