LM431SA Fairchild Semiconductor, LM431SA Datasheet - Page 7

• Manufacturer Part Number: LM431SA
• Description: The LM431SA/LM431SB/LM431SC are three terminal output adjustable regulators with thermal stability over operating temperature range
• Manufacturer: Fairchild Semiconductor

LM431SA/LM431SB/LM431SC Rev. 1.0.9
© 2012 Fairchild Semiconductor Corporation
Typical Application
Figure 16. Current Limit or Current Source
Figure 15. High Current Shunt Regulator
Figure 13. Shunt Regulator
V
V
O
O
=
=
⎛
⎝
⎛
⎝
1
1
+
+
LM431S
R
------ -
R
R
------ -
R
1
2
1
2
LM431S
LM431S
⎞ V
⎠
⎞ V
⎠
ref
ref
7
Figure 17. Constant-Current Sink
Figure 14. Output Control for
Three-Terminal Fixed Regulator
LM7805/MC7805
V
O
=
LM431S
LM431S
V
ref
⎛
⎝
1
+
R
------ -
R
1
2
⎞
⎠
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