TL431CPK

The TL431CPK is a precision programmable voltage reference from Texas Instruments. This device is widely used in various applications, like voltage regulation, power supplies, and adjustable voltage references, due to its ability to maintain a stable output voltage. It features an adjustable shunt regulator capable of output voltages from 2.5V to 36V with a typical output voltage tolerance of ±2%. The TL431CPK operates with a wide temperature range, typically from -40°C to +85°C, making it suitable for various environmental conditions.
The device functions as a shunt regulator, meaning it can be connected in parallel with the load to regulate the voltage across it. It offers a dynamic impedance of about 0.22Ω and can handle cathode currents from 1 mA to 100 mA. The TL431CPK is available in several package options, including TO-92 and SOT-23, facilitating integration into different designs. Its ease of use, precision, and reliability make it a popular choice in applications requiring tight voltage control.

The TL431CPK is a precision programmable voltage reference with the following key features:
1. Adjustable Output Voltage: The device offers an adjustable output voltage range, typically from 2.5V to 36V, allowing for versatile applications in different circuit designs.
2. Precision: It features tight voltage regulation with a typical initial accuracy of ±2%, which is crucial for applications requiring high precision.
3. Temperature Stability: The TL431CPK maintains voltage stability across a wide temperature range, enhancing reliability in varying environmental conditions.
4. Low Temperature Coefficient: It has a low temperature coefficient of about 50 ppm/°C, ensuring minimal drift over temperature changes.
5. Sink Current Capability: The device can sink currents from 1 mA to 100 mA, providing flexibility and robustness in different load conditions.
6. Package Options: It is available in various package options, including TO-92, SOT-23, and SOIC, to suit different space and mounting requirements.
7. Wide Application: Ideal for use in linear regulators, switching power supplies, and other voltage reference applications.
These features make the TL431CPK a versatile and reliable choice for precise voltage reference applications in a wide range of electronic circuits.

The TL431CPK is available in a TO-92 package. This package type is commonly used for small transistors and other components, providing a simple through-hole mounting option.

The TL431CPK is a programmable precision shunt regulator. It typically comes in a 3-pin package, such as TO-92, SOT-23, or similar small-outline packages. The pin functions are as follows:
1. Reference (Ref): This pin is used to set the reference voltage. By connecting it to a resistor divider network, the output voltage can be adjusted.
2. Anode (A): This is the terminal where the current flows out when the device is used as a shunt regulator. It is the equivalent of the "negative" side in a standard diode configuration.
3. Cathode (K): The cathode is connected to the load and is the "positive" side in a standard diode configuration. It operates as an output, maintaining the regulated voltage.
The TL431CPK acts like a low-voltage, adjustable Zener diode with a reference voltage of approximately 2.5V and can be adjusted for output voltage levels ranging from 2.5V to 36V, depending on the external resistor network connected to the Ref pin.

The TL431CPK is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits. The company is one of the largest semiconductor manufacturers globally and is known for its development, production, and sale of a wide range of electronic components, which include analog chips and embedded processors. Texas Instruments serves a wide array of industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. The company is renowned for its innovation in technology and for providing high-quality, reliable, and efficient components that are essential in numerous electronic devices and systems.

The TL431CPK is a precision shunt voltage reference often used in various applications such as voltage regulation, output voltage adjustment in power supplies, and precision current limiting in battery chargers. It is also employed in switching power supplies as a reference voltage source, for overvoltage protection circuits, and in feedback loops to ensure stable voltage references. Its versatility in providing a stable reference voltage makes it suitable for use in consumer electronics, telecommunications, and industrial equipment.

The TL431CPK is a programmable shunt voltage reference. Equivalent products include the LM431, TL431A, TL431B, KA431, and AZ431. These components are generally interchangeable in circuits requiring a precision voltage reference, but check specific parameters like voltage tolerance and temperature coefficient to ensure compatibility with your application.