Typical Application
VO
=
1
+
R-R----12-
Vref
LM431A/B/C
Figure 11. Shunt Regulator
LM431A/LM431B/LM431C
VO
=
Vr
ef
1
+
R-R----12-
LM7805/MC7805
VO = 1 + R-R----12- Vref
LM431A/B/C
LM431A/B/C
Figure 12. Output Control for
Three--Te r- minal Fixed Regulator
Figure 13. High Current Shunt Regulator
LM431A/B/C
Figure 14. Current Limit or Current Source
LM431A/B/C
Figure 15. Constant-Current Sink
7