SFH618A-3X017

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Introduction

The SFH618A-3X017 optoisolator combines a transistor photovoltaic output with very high immunity to spurious pulses and wide input/output junction voltage across a variety of environmental conditions. The optoisolator is capable of achieving a very low leakage current and wide input/output junction voltage for reliable communication.

Application Fields

The SFH618A-3X017 optoisolator can be applied in a range of applications including motor control, touch sensing, linear motion controllers, digital-to-analog converters, logic isolators, and SoC-level isolation. Additionally, its low-power consumption, wide junction voltage, and high immunity to spurious pulses make it an excellent choice for consumer electronic devices, automotive systems, industrial systems, and telecom solutions.

Working Principles

The working principle of the SFH618A-3X017 optoisolator is based on an integrated photovoltaic transistor chip. A light-emitting diode (LED) light source is used to generate a current which is converted to a voltage by a phototransistor. This voltage is then used to control the base current of a power transistor connected to the output pins. The optoisolator is then able to provide galvanic isolation between the input and output pins. As the LED is illuminated, the base current of the power transistor is regulated by the output voltage which in turn controls the current for the load.

Summary

The SFH618A-3X017 optoisolator features a transistor photovoltaic output for high immunity to spurious pulses and wide input/output junction voltage across a range of environmental conditions. The device can be employed in motor control, touch sensing, linear motion controllers, digital-to-analog converters, logic isolators, and SoC-level isolation, and is suitable for use in consumer electronics, automobiles, industrial systems, and telecom solutions.

The SFH618A-3X017 optoisolator works by using an integrated photovoltaic transistor chip connected to a light emitting diode, which produces a current converted to a voltage by the phototransistor. This voltage is used to regulate the base current of a power transistor connected to the output pins, permitting the device to provide galvanic isolation between the input and output pins.

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