The TL431ACPK from Texas Instruments is a highly versatile and precise programmable voltage reference. This three-terminal adjustable shunt regulator offers excellent temperature stability and output current handling capability, making it a popular choice for a variety of applications in the electronics industry.

Key Features

• Adjustable Output Voltage: The TL431ACPK can be programmed from the standard 2.5V up to 36V with two external resistors, providing designers with flexibility in their circuit designs.
• Low Output Noise: With a low output noise characteristic, this device is ideal for precision electronics where a stable voltage reference is crucial.
• High Stability: The device offers high stability over a wide range of operating temperatures, ensuring reliable performance under varying environmental conditions.
• Tolerance: The reference voltage tolerance is set at 0.5%, enabling precise voltage regulation for critical applications.
• Low Dynamic Output Impedance: Its low dynamic output impedance provides a good transient response, which is beneficial in feedback control systems.
• Wide Operating Current Range: The TL431ACPK operates with a current range from 1 mA to 100 mA, accommodating a broad spectrum of applications.

Applications

The versatility of the TL431ACPK allows it to be used in various applications, including:

• Power supplies
• Battery chargers
• Voltage monitors
• Adjustable current sources
• Switching power supplies
• Linear regulators

Product Specifications

The TL431ACPK comes in a TO-92 package, which is widely used for through-hole mounting. It is characterized for operation from -40°C to 85°C, making it suitable for commercial-grade applications. Its typical output impedance is 0.2 ohms, and it features a typical temperature coefficient of only 50 ppm/°C.

Conclusion

The Texas Instruments TL431ACPK adjustable precision shunt regulator stands out for its ease of use, high accuracy, and reliability. It is a go-to component for engineers and designers looking to build stable and precise voltage regulation into their electronic systems. With its combination of features and performance, the TL431ACPK continues to be a trusted component in the electronics industry.