Datasheet

TL431, A, B Series
7
MOTOROLA ANALOG IC DEVICE DATA
Input
Output
t, TIME (
µ s)
Pulse
Generator
f = 100 kHz
0 8.04.0 20
0
16
2.0
3.0
12
0
1.0
5.0
0
20
40
60
80
100
120
140
1000 pF 0.01
µ F 0.1 µ F 1.0 µ F 10 µ F
C
L
, LOAD CAPACITANCE
100 pF
Figure 14. Pulse Response Figure 15. Stability Boundary Conditions
50
220
Output
Gnd
Input
Monitor
A) V
KA
= V
ref
B) V
KA
= 5.0 V @ I
K
= 10 mA
C) V
KA
= 10 V @ I
K
= 10 mA
D) V
KA
= 15 V @ I
K
= 10 mA
D) T
A
= 25
° C
T
A
= 25 C
VOLTAGE SWING (V)
I
K
, CATHODE CURRENT (mA)
A
B
C
D
B
A
Stable
Stable
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
V+
I
K
150
I
K
V+
150
C
L
10 k
C
L
Figure 18. Shunt Regulator Figure 19. High Current Shunt Regulator
V+ V
out
R1
V+
V
out
R1
R2
R2
V
out
1
R1
R2
V
ref
V
out
1
R1
R2
V
ref
TYPICAL APPLICATIONS