LM431 Overview
The TL431 and TL431A are 3-terminal adjustable shunt regulators with specified thermal stability over applicable automotive and mercial temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors (see Figure 4). These devices have a typical output impedance of 0.2Ω.
LM431 Key Features
- Equivalent full-range temperature coefficient: 30ppm/°C
- 0.2Ω typical output impedance
- Sink current capability: 1mA to 100mA
- Low output noise
- Adjustable output voltage: VREF to 36V
