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1. Description
Three-terminal shunt regulator family with an output voltage range between Vref = 2.495 V and 36 V, to be set by two external resistors. The TL431ACDBZRVL family comprises a range of 3-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive and commercial temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V with two external resistors (see Figure 8). These devices have a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications like on-board regulation, adjustable power supplies and switching power supplies.
2. Features
1. Programmable output voltage up to 36 V
2. Three different reference voltage tolerances:
- Standard grade: 2 %
- A-Grade: 1 %
- B-Grade: 0.5 %
3. Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C)
4. Low output noise
5. Typical output impedance: 0.2 Ω
6. Sink current capability: 1 mA to 100 mA
7. AEC-Q100 qualified (grade 1)
3. Applications
1. Shunt regulator
2. Precision current limiter
3. Precision constant current sink
4. Isolated feedback loop for Switch Mode Power Supply (SMPS)
4. Pinning information
5. Package outline
