LTV-817S-TA Isolators

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Optoisolators—Transistor, Photovoltaic Output are widely used in industrial, automotive and telecom applications and are an important part of guaranteeing system safety. The LTV-817S-TA optoisolator is a very efficient and reliable optoisolator at a reasonable price. In this article, we will learn about the application field and working principle of the LTV-817S-TA optoisolator.

The LTV-817S-TA optoisolator is designed for applications that require direct mounting on the printed circuit board. It is a small-sized, low-current type optoisolator that is perfect for isolating low-frequency logic signals and DC level signals. The output stage consists of a photovoltaic transistor, eliminating the need for a photocoupler, and ensuring better performance and higher long-term reliability. The collector-emitter insulation voltage of the optoisolator is 5kV, which ensures increased safety in industrial and automotive applications.

The operating voltage range of the LTV-817S-TA is between 2.7 and 5.5 VDC, with a maximum forward current of 3.5 mA, and a maximum reverse voltage of 5 VDC. The response time of the optoisolator is 5.0 us (ON) and 0.1ms (OFF), making it suitable for applications that require fast response. The output current of the optoisolator is 0.15 mA, with a collector-emitter voltage of 30 VDC.

The LTV-817S-TA optoisolator is designed for a wide range of applications, such as motor control, DC-DC converter control, battery-sensor isolation, and home automation. It is suitable for use in automotive, medical, industrial and telecom applications. The optical coupling of the optoisolator ensures electrical isolation between the input and the output stages, and protects the PC board from overvoltage, spikes, and transient signals.

The working principle of the LTV-817S-TA optoisolator is straightforward. When a signal is applied to the input of the device, the infrared LED emits a beam of light towards the photodetector. The photodetector responds by turning on the transistor, thus providing an isolated output signal in the form of an LED-transistor pair. The phototransistor provides an electrical isolation between the input and the output stages, thus preventing any feedback from the output to the input circuit.

The LTV-817S-TA optoisolator is a reliable and efficient device, suitable for a wide range of applications. It is easy to install and has the advantage of providing electrical isolation between the input and the output stages. It is an economical choice for applications that require isolation and protection from high voltage and transient signals.

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