The TL431CPE4 from Texas Instruments is a versatile and highly precise programmable voltage reference. This three-terminal adjustable shunt regulator is commonly used in a wide array of applications, including power supplies, battery chargers, and voltage monitors, thanks to its ease of use and flexibility.

Key Features

• Adjustable Output: The output voltage can be set to any value between Vref (approximately 2.495 V) and 36 V with two external resistors. This feature provides flexibility for the designer to set the desired voltage level according to the application's requirements.
• Low Operational Current: The device operates with a low current in the range of 1 to 100 mA, making it suitable for battery-powered devices where power efficiency is crucial.
• High Accuracy: The TL431CPE4 offers a typical output voltage tolerance of ±0.5%, ensuring precise voltage regulation for sensitive electronic circuits.
• Temperature Stability: The voltage reference has a typical temperature coefficient of 50 ppm/°C, indicating stable performance over a wide temperature range.
• Wide Operating Temperature Range: The device is operational over a full industrial temperature range of -40°C to 85°C, making it reliable in harsh environmental conditions.

Applications

The TL431CPE4 is a popular choice for various applications due to its adaptability and precision. It is often found in:

• Switching power supplies
• Linear power supplies
• On-board regulation
• Adjustable power supplies
• Battery chargers
• Motor control systems
• Voltage monitoring circuits

Package and Quality

Offered in a TO-92 package, the TL431CPE4 is not only compact but also robust, ensuring a reliable solution for space-constrained applications. Texas Instruments is known for its commitment to quality, and this product is no exception, meeting high industry standards for performance and reliability.

Conclusion

Overall, the TL431CPE4 is an integral component for designers looking for a reliable and precise voltage reference. Its ability to be programmed for a specific voltage, low operational current, and high accuracy make it an excellent choice for a variety of electronic applications. Texas Instruments' reputation for quality products ensures that the TL431CPE4 is a dependable choice for your voltage regulation needs.