TL431, A, B Series
Figure 14. Pulse Response
Figure 15. Stability Boundary Conditions
140
T
= 25 C
A) V
= V
ref
Stable
A
KA
KA
KA
KA
Input
Monitor
3.0
2.0
1.0
B) V
C) V
D) V
= 5.0 V @ I = 10 mA
K
120
Output
Gnd
= 10 V @ I = 10 mA
K
220
50
A
A
= 15 V @ I = 10 mA
K
Output
Pulse
100
80
D) T = 25
°C
A
B
B
Generator
f = 100 kHz
Stable
C
60
40
D
0
5.0
0
Input
20
0
0
4.0
8.0
12
16
20
100 pF
1000 pF
0.01
µF
0.1
µ
F
1.0
µF
10 µF
t, TIME (µs)
C , LOAD CAPACITANCE
L
Figure 16. Test Circuit For Curve A
of Stability Boundary Conditions
Figure 17. Test Circuit For Curves B, C, And D
of Stability Boundary Conditions
150
150
I
I
K
K
10 k
V+
V+
C
C
L
L
TYPICAL APPLICATIONS
Figure 18. Shunt Regulator
Figure 19. High Current Shunt Regulator
V+
V
out
V+
V
out
R1
R1
R2
R2
R1
V
1
V
out
ref
R2
R1
R2
V
1
V
out
ref
7
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
