SPX1431S-L/TR

PMIC - Voltage Reference

SPX1431S-L/TR is a three-terminal adjustable shunt regulator integrated circuit. It provides excellent line and load regulation over a wide input voltage range and stable output over full temperature range. It is available in a TO-92 package and is ideal for use in low voltagesystems such as personal computers, LCD screens, graphics cards or audio amplifiers.

Features

• Integrated full scale bandgap reference.
• Alternative output voltage up to 2.5V
• Low temperature coefficient:0.6ppm/°C
• Power dissipation ranges from 6 to 28W
• High accuracy: +-1%
• Output sink/source capability up to 4 mA
• High operating temperature range: -25°C to +85°C

Applications

SPX1431S-L/TR is used in applications such as consumer electronics, telecommunications, automotive electronics, and industrial control applications. It can be used for voltage regulation, switching power supplies, human machine interface and other applications that require a stable, low noise output voltage.

Working Principle

SPX1431S-L/TR features a full-scale bandgap voltage reference (BGR). This BGR is comprised of a temperature compensated circuit similar to the classic bipolar bandgap design, but instead its curves are digitally-generated within the chip. It is designed to maintain a stable output voltage over a wide temperature range (+-5V range). The BGR circuit monitors any variations in the output voltage and compensates for them in order to maintain the desired level. Typically, the output voltage can be adjusted by choosing an appropriate feedback resistor.

Conclusion

The SPX1431S-L/TR is a highly versatile voltage regulator integrated circuit that can be used in a wide range of applications. It offers excellent line and load regulation performance and a wide temperature range. It is also easy to use and adjustable via its output resistors. Overall, it is a great choice for those who are looking for a reliable and stable solution for voltage regulation.