Data Sheet

KA431S / KA431SA / KA431SL — Programmable Shunt Regulator
© 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA431S / KA431SA / KA431SL Rev. 6.7 7
Typical Performance Characteristics (Continued)
Figure 17. Stability Boundary Conditions
Figure 18. Anode-Reference Diode Curve
Figure 19. Reference-Cathode Diode Curve Figure 20. Reference Input Voltage vs.
Ambient Temperature
100p 1n 10n 100n 1? 10?
0
20
40
60
80
100
120
140
B
A
A V
KA
= Vref
B V
KA
= 5.0 V @ I
K
= 10
mA
T
A
= 25
o
C
I
K
, CATHODE CURRENT(mA)
C
L
, LOAD CAPACITANCE
I
K
- Cathode Current (mA)
C
L
- Load Capacitance
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
0
1
2
3
4
5
Current(mA)
Anode-Ref. Voltage(V)
Current (mA)
Anode-Ref. Voltage (V)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
0
1
2
3
4
5
Current(mA)
Ref.-Cathode Voltage(V)
Ref.-Cathode Voltage (V)
Current (mA)
-50 -25 0 25 50 75 100 125
2.46
2.47
2.48
2.49
2.50
2.51
V
REF
, Reference Input Voltage (V)
T
A
, Ambient Temperature (
o
C)