TLP118(TPR,E)

The TLP118(TPR,E) 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 ideal for applications where signal integrity and safety are paramount, such as in power supplies, industrial automation, and communication systems.

Key Features:

1. Isolation Voltage: The TLP118 offers a high isolation voltage, typically around 5000 Vrms, which ensures that the input and output circuits are electrically isolated from each other. This is crucial for protecting sensitive components from high voltages.

2. Input Configuration: The input side of the TLP118 consists of an infrared LED. When a current flows through the LED, it emits infrared light, which is detected by the phototransistor on the output side. The input current required to activate the LED is relatively low, making it energy-efficient.

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 be configured for various applications, including switching and signal transmission.

4. Transfer Characteristics: The TLP118 has a high current transfer ratio (CTR), which indicates the efficiency of the optoisolator in transferring input current to output current. This characteristic is essential for ensuring that the output can drive subsequent stages in a circuit effectively.

5. Temperature Range: The device operates over a wide temperature range, typically from -40°C to +100°C, making it suitable for use in various environmental conditions.

6. Package Type: The TLP118 is available in a compact DIP (Dual In-line Package) form factor, which facilitates easy integration into printed circuit boards (PCBs). The small size helps save space in electronic designs.

7. Applications: Common applications for the TLP118 include:

   • Signal isolation in data communication systems
   • Switching power supplies
   • Microcontroller interfacing
   • Motor control circuits
   • Industrial automation systems

Electrical Characteristics:

• Input Forward Voltage (Vf): Typically around 1.2V at a forward current of 10 mA.
• Output Collector-Emitter Voltage (Vce): Maximum rating is usually around 30V.
• Output Current (Ic): The maximum output current can be around 50 mA, depending on the specific application and conditions.

Conclusion:

The TLP118(TPR,E) from Toshiba is a versatile and reliable optoisolator that provides excellent electrical isolation and efficient signal transfer. Its robust design and wide range of applications make it a popular choice for engineers and designers looking to enhance the safety and performance of their electronic systems.