View tl431 ti datasheet:

TL431, TL431A ADJUSTABLE PRECISION SHUNT REGULATORS SLVS005J – JULY 1978 – REVISED JULY 1999 D PACKAGE D Equivalent Full-Range Temperature (TOP VIEW) Coefficient . . . 30 ppm/°C D 0.2-? Typical Output Impedance CATHODE 1 8 REF D Sink-Current Capability . . . 1 mA to 100 mA ANODE 2 7 ANODE ANODE 3 6 ANODE D Low Output Noise NC 4 5 NC D Adjustable Output Voltage . . . Vref to 36 V D Available in a Wide Range of High-Density P OR PW PACKAGE Packages (TOP VIEW) description CATHODE 1 8 REF The TL431 and TL431A are three-terminal NC 2 7 NC adjustable shunt regulators with specified thermal NC 3 6 ANODE stability over applicable automotive, commercial, NC 4 5 NC and military temperature ranges. The output voltage can be set to any value between Vref NC – No internal con