LTV-824

The LTV-824 is an optocoupler manufactured by Lite-On, designed to provide electrical isolation between its input and output while allowing signal transmission. This component is particularly useful in applications where it is necessary to separate different parts of a circuit to prevent high voltages from affecting sensitive components.

Key Features:

1. Isolation Voltage: The LTV-824 typically offers a high isolation voltage, often around 5,000 Vrms, ensuring that the input and output sides are electrically isolated from each other. This is crucial for protecting sensitive devices from voltage spikes and noise.

2. Input Configuration: The input side of the LTV-824 consists of an infrared LED. When current flows through the LED, it emits infrared light, which is the basis for the optocoupling mechanism. The forward voltage drop of the LED is typically around 1.2V, and it can handle a forward current of up to 20 mA.

3. Output Configuration: The output side features a phototransistor that is sensitive to the infrared light emitted by the LED. When the LED is activated, the phototransistor conducts, allowing current to flow through the output circuit. The output can handle a collector-emitter voltage of up to 50V and a collector current of up to 50 mA.

4. Transfer Characteristics: The LTV-824 has a high current transfer ratio (CTR), which indicates the efficiency of the optocoupler in transferring input current to output current. This ratio can vary but is typically in the range of 100% to 600%, depending on the specific conditions of operation.

5. Package Type: The LTV-824 is usually housed in a compact 4-pin DIP (Dual In-line Package) or surface mount package, making it suitable for various PCB designs. The small footprint allows for easy integration into both consumer and industrial applications.

6. Temperature Range: The device operates effectively over a wide temperature range, typically from -40°C to +85°C, making it suitable for use in diverse environments.

Applications:

The LTV-824 is commonly used in various applications, including:

• Signal Isolation: Protecting sensitive components in microcontroller and digital circuit designs.
• Switching Power Supplies: Providing feedback and control signals while maintaining isolation.
• Data Communication: Ensuring safe transmission of signals in communication systems.
• Industrial Automation: Isolating control signals in industrial equipment to prevent interference and damage.

Conclusion:

The LTV-824 from Lite-On is a versatile optocoupler that combines high isolation voltage, efficient signal transfer, and a compact design, making it an ideal choice for a wide range of electronic applications where safety and reliability are paramount. Its robust performance in various environmental conditions further enhances its utility in both consumer and industrial electronics.