Data Sheet

KA431S / KA431SA / KA431SL — Programmable Shunt Regulator
© 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA431S / KA431SA / KA431SL Rev. 6.7 5
Test Circuits
Typical Applications
Figure 3. Test Circuit for V
KA
= V
REF
Figure 4. Test Circuit for V
KA
≥ V
REF
Figure 5. Test Circuit for I
KA(OFF)
Figure 6. Shunt Regulator Figure 7. Output Control for
Three-Terminal Fixed Regulator
Figure 8. High Current Shunt
Regulator
Figure 9. Current Limit or Current Source
Figure 10. Constant-Current Sink
LM431S
KA431S
LM431S
KA431S
KA431S
V
O
1
R
1
R
2
------ -
+


V
ref
=
KA431S
V
O
V
ref
1
R
1
R
2
------ -
+


=
KA431S
V
O
1
R
1
R
2
------ -
+


V
ref
=
KA431S
KA431S
KA431S