TLP187(TPL,E

The TLP187 is an optoisolator (also known as an optocoupler) manufactured by Toshiba. It is designed to provide electrical isolation between its input and output, making it suitable for various applications where signal integrity and safety are paramount. Here’s a detailed description of its features and specifications:

General Description:

The TLP187 consists of a light-emitting diode (LED) and a phototransistor housed in a single package. When an electrical signal is applied to the LED, it emits infrared light, which is detected by the phototransistor on the output side. This mechanism allows for the transfer of signals while maintaining electrical isolation between the input and output circuits.

Key Features:

1. Isolation Voltage: The TLP187 typically offers a high isolation voltage, often rated at 5000 Vrms, ensuring safety in high-voltage applications.

2. Input Current: The input current required to activate the LED is relatively low, making it energy-efficient. The typical forward current is around 10 mA, with a maximum rating that allows for flexibility in design.

3. Output Characteristics: The phototransistor output can handle a collector-emitter voltage (Vce) of up to 80 V, making it suitable for interfacing with various digital and analog circuits.

4. Switching Speed: The TLP187 is designed for fast switching applications, with a typical rise time and fall time in the range of microseconds, allowing it to be used in high-speed data communication.

5. Temperature Range: The device operates effectively over a wide temperature range, typically from -40°C to +100°C, making it suitable for industrial applications.

6. Package Type: The TLP187 is available in a compact DIP (Dual In-line Package) or surface-mount package, facilitating easy integration into various circuit designs.

Applications:

The TLP187 is widely used in:

• Data Communication: For isolating signals in communication lines.
• Microcontroller Interfacing: To protect sensitive microcontroller inputs from high voltages.
• Switching Power Supplies: For feedback isolation in power supply circuits.
• Industrial Automation: In control systems where isolation is necessary to prevent ground loops and protect equipment.

Electrical Characteristics:

• Input-Output Isolation Voltage: 5000 Vrms
• Forward Voltage (Vf): Typically around 1.2 V at 10 mA
• Collector Current (Ic): Up to 50 mA
• Current Transfer Ratio (CTR): Typically ranges from 50% to 600%, depending on the input current.

Conclusion:

The TLP187 from Toshiba is a versatile optoisolator that combines high performance with robust isolation capabilities, making it an excellent choice for a wide range of electronic applications. Its compact design, efficient operation, and reliable performance make it a popular component in both consumer and industrial electronics.