TL432B Precision Programmable Reference

The TL432B from Texas Instruments is a versatile, precision programmable voltage reference that is a part of the wider TL43x family of shunt voltage references. This particular model offers an upgraded performance with a typical temperature coefficient and a higher precision voltage option, making it a reliable choice for various applications.

The TL432B is a three-terminal adjustable shunt regulator with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V with two external resistors. This device exhibits a wide operating current range from 1 mA to 100 mA with a typical dynamic impedance of 0.2 Ω.

With its low output noise and low dynamic output impedance, the TL432B is an excellent choice for voltage regulation in a plethora of applications, including adjustable power supplies, switching power supplies, and linear regulators. Its ability to work as a replacement for zener diodes in many applications provides improved output voltage precision and stability, which is crucial for sensitive electronics.

Key features of the TL432B include:

• Adjustable output voltage: Vref to 36 V
• Low temperature coefficient and excellent thermal stability
• Low dynamic output impedance
• Typical output impedance of 0.2 Ω
• Wide operating current range: 1 mA to 100 mA
• Fast turn-on response

This device is offered in a variety of packages including the small-outline transistor (SOT-23) and the standard 3-pin small outline (SOIC) and TO-92 packages, providing flexibility for compact PCB layouts and designs.

In summary, the TL432B from Texas Instruments is a high-performance, programmable voltage reference that offers designers a robust solution for a wide range of applications. Its precision, stability, and versatility make it an essential component for ensuring consistent performance in electronic systems.