The TL431, A, B integrated circuits are three−terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V with two external resistors.

Features

• Programmable Output Voltage to 36 V

• Voltage Reference Tolerance: ±0.4, Typ @ 25°C (TL431B)

• Low Dynamic Output Impedance, 0.22Ω Typical

• Sink Current Capability of 1.0 mA to 100 mA

• Equivalent Full−Range Temperature Coefficient of 50 ppm/°C Typical

• Temperature Compensated for Operation over Full Rated Operating

Temperature Range

• Low Output Noise Voltage

• Pb−Free Packages are Available