TL431CPWE4

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TL431CPWE4 is an adjustable precision shunt regulator and a defining component of the PMIC - Voltage Reference. It is similar to the classic TL431 shunt regulator but has a more compact package and improved performance. Understanding the TL431CPWE4\'s field of application and Working Principle will help users identify when and how to best incorporate this device into their designs.

Application Field

The TL431CPWE4 is largely used as a shunt regulator for precision voltage reference and for supplying precise, individually adjustable, current-limited power sources. It is especially suitable for power supplies up to 650mA with an adjustable output voltage between 1.24V and 32V. Due to its precision, it can be customized to many applications, including SMPS, power management, and monitoring. These settings can also be adjusted depending on the application\'s output voltage. In addition, the TL431CPWE4 can be used for other intensive precision application areas, such as LED driver, hall elements and water level meter.

Working Principle

The TL431CPWE4 is a three-terminal adjustable precision shunt regulator, which features a fixed reference that can produce an adjustable output voltage. Its built-in reference voltage has a high accuracy of ±2.5% and a stable temperature coefficient of 20ppm/°C. It has the ability to provide precision current limiting and an adjustable output voltage range between 1.24V and 32V. The output voltage can be adjusted with an external series resistor divider and the output current can be limited by an external resistor.

The TL431CPWE4 has a high output impedance and can provide a stable voltage source from its wide input voltage range of 2V to 40V. This device also contains a temperature compensation pin that is used to maintain accuracy and to compensate for temperature variations in the circuit. Its triple-shielded package provides enhanced stability and its excellent thermal stability allows it to be used for critical long-term stability applications.

Conclusion

In conclusion, the TL431CPWE4 is an adjustable precision shunt regulator, allowing users to regulate the output voltage over its wide range. It is mainly used to provide accurate and precise current-limited power sources and can also be used in other intensive precision application areas. Its performance and accuracy makes it indispensable in the field of PMIC - Voltage Reference.

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