LOC111STR

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Optoisolators are divided into two main types - transistor output optoisolators and photovoltaic output optoisolators. LOC111STR optoisolators are photovoltaic output optoisolators.

Photovoltaic output optoisolators are designed to provide an electrical isolation between the input and output of the circuit. They are composed of an LED connected to a photodiode and capacitor. In the simplest form, when the LED is illuminated with a voltage source, the current through the LED causes photo-stimulated current through the photodiode. This current charges the capacitor, and the voltage across the capacitor is output from the optoisolator.

The LOC111STR optoisolator is a low power photovoltaic output optoisolator which has a maximum output voltage of 18V and a maximum peak output current of 1.2mA. It is designed for operation within a maximum junction temperature of 150°C and is suitable for use in high temperature applications. The photodiode and LED are integrated into the package, and the optoisolator is supplied in a standard 8-pin DIP or surface mount package.

The LOC111STR optoisolator is most commonly used in applications where high electrical isolation is required, such as in medical devices or communications systems. It can also be used in applications where high speed is necessary, such as for high-speed digital logic circuits. The optoisolator provides an effective isolation between input and output, protecting the system from noise, transients and other electrical disturbances.

In addition to providing electrical isolation, the LOC111STR optoisolator also provides highergate protection than other optoisolators. This is due to the fact that the photodiode in the optoisolator has a reverse voltage rating of 20V, which is higher than the reverse voltage rating of other optoisolators. This higher gate protection makes the LOC111STR optoisolator suitable for use in higher voltage circuits.

The working principle of the LOC111STR optoisolator is based on the transfer of energy from a light source (LED) to a photodiode, which produces an electrical current. The current is then stored in a capacitor and the voltage across the capacitor is output. This process allows for electrical isolation between the input and output of the circuit, and provides the benefits of higher gate protection and improved noise immunity.

In summary, the LOC111STR optoisolator is a low-power photovoltaic output optoisolator which is designed for use in applications where high electrical isolation is required. It offers a high reverse voltage rating, allowing for higher gate protection and improved noise immunity. The optoisolator is also suitable for use in high temperature applications, making it an ideal choice for a wide range of applications.

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