TL431_11 Datasheet, PDF (6/10 Pages) Fairchild Semiconductor – Programmable Shunt Regulator

TL431/TL431A
Typical Application
V_O = _⎝⎛1 + ^RR-----¹²-_⎠⎞ V_ref
V_O
=
V_re
f
⎛
⎝
1
+
RR_{-----12-⎠⎞}
MC7805/LM7805
V_O = _⎝⎛1 + ^RR-----¹²-_⎠⎞ V_ref
TL431/A
Figure 10. Shunt Regulator
TL431/A
TL431/A
Figure 11. Output Control for Three- Figure 12. High Current Shunt Regula-
Termianl Fixed Regulator
tor
TL431/A
Figure 13. Current Limit or Current Source
TL431/A
Figure 14. Constant-Current Sink
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