The NXP TL431S is a three-terminal programmable shunt voltage reference that offers excellent temperature stability and output current handling capability. This precision voltage reference is commonly used in a wide variety of applications including power supplies, battery chargers, and voltage monitoring circuits, where it provides a stable reference voltage for the regulation of output voltage.

Key Features:

• Adjustable Output Voltage: The TL431S can be programmed from the reference voltage of 2.495 V up to 36 V with two external resistors.
• Low Temperature Coefficient: This device features a typical temperature coefficient of only 50 ppm/°C, ensuring a stable output voltage over a wide temperature range.
• Wide Operating Current Range: The TL431S operates with a current range from 1 mA to 100 mA, providing flexibility for various applications and ensuring stability under different load conditions.
• High Stability: With a typical output impedance of 0.2 ohms, the TL431S offers low output noise and excellent stability.
• Surface-Mount Package: Available in a small-outline transistor (SOT23) package, the TL431S is suitable for automated assembly processes and is ideal for space-constrained applications.

Applications:

• Switching power supplies
• Linear power supplies
• Battery chargers
• Voltage monitors
• Adjustable voltage references

The NXP TL431S is a versatile component that combines ease of use with high performance. Its ability to maintain a precise voltage reference under varying conditions makes it an essential part of any power management system. Whether you are designing a simple power supply or a complex multi-output regulator, the TL431S provides the accuracy and stability needed to ensure reliable operation.