TLP385(BLL,E

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Optoisolators are electrical isolation devices that use light to output an electrical signal from a separate electrical circuit. The TLP385 is a type of optoisolator that uses a transistor, photovoltaic output to connect two electrical circuits, typically operating at different voltages. It provides electrical isolation between input and output and has a maximum input/output isolation voltage of 1,500 Vrms.

BLL,E Application Field and Working Principle

The BLL,E application field of the TLP385 is typically used for transferring digital signals between two circuits, such as those used in microcontrollers, sensors, measures, motor drivers, and industrial automation systems. It offers a wide operating temperature range from -55°C to 125°C, making it suitable for use in a variety of industrial settings. The BLL,E circuit provides an optical isolation between the input and output so that the input circuit is protected from transient voltages, electrical noise, and ground loops.

The working principle of the TLP385 is based on a phototransistor coupled with a monolithic silicon photodiode. The photodiode produces an electrical current when exposed to light, and this current activates the phototransistor. The phototransistor output is suitable for driving digital circuits. When a voltage is applied to the input of the TLP385, the photodiode generates light, which is converted into an electrical current by the phototransistor. The current is then amplified by the transistor output stage so that it is suitable for driving digital circuits.

The TLP385 is a highly reliable optoisolator device that is used in a variety of industrial applications. It offers maximum input/output isolation voltage of 1,500Vrms, a wide operating temperature range, and an enable input that can be used to place the device in a low power state. The TLP385 is also RoHS compliant and is available in a variety of packages.

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