TL431 Fairchild Semiconductor, TL431 Datasheet - Page 6

• Manufacturer Part Number: TL431
• Description: The TL431/TL431A are three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges
• Manufacturer: Fairchild Semiconductor

TL431/TL431A
Typical Application
6
Figure 10. Shunt Regulator
Figure 13. Current Limit or Current Source
V
O
=
⎛
⎝
1
+
TL431/A
R
------ -
R
1
2
⎞ V
⎠
ref
TL431/A
Figure 11. Output Control for Three-
Termianl Fixed Regulator
MC7805/LM7805
V
O
=
V
TL431/A
ref
⎛
⎝
1
+
R
------ -
R
1
2
⎞
⎠
Figure 14. Constant-Current Sink
Figure 12. High Current Shunt Regula-
TL431/A
V
O
=
⎛
⎝
1
tor
+
R
------ -
R
1
2
TL431/A
⎞ V
⎠
ref