TL431A Voltage Reference Shunt Regulator

TL431A Voltage Reference Shunt Regulator integrated circuits are three-terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low-temperature coefficient Zener programmable from V_ref to 36 V with two external resistors.

These devices exhibit a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 W. The characteristics of these references make them excellent replacements for Zener diodes in many applications such as digital voltmeters, power supplies, and op-amp circuitry.

The 2.5 V reference makes it convenient to obtain a stable reference from 5.0 V logic supplies. Since the TL431, A, B operates as a shunt regulator, it can be used as a positive or negative voltage reference.

• Product Category Voltage References
• Reference Type Splitter
• Temperature Coefficient 50 PPM/C
• Rohs Yes
• Package – 92 (TO – 92 – 3)
• Output Type Adjustable
• Voltage – Output Min/Fixed 2.495 V
• Voltage – Output Max 4 0 V
• Output Current 150 mA
• Tolerance ± 1 %
• Cathode Current 500 uA
• Operating Temperature – 40 C ~ 125 C

Development  Resources: demo codes, schematics, datasheets, etc

TL431A Voltage Reference Shunt Regulator Data Sheets 

Notes:

1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual colour of the item because of different photographing light, angles and display monitors.