P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
TYPICAL CHARACTERISTICS
FIGURE 14. — PULSE RESPONSE
6
5
4
3
Output
220
Pulse
Generator
f = 100kHz
50
2
1
0
3
2
GND
1
0
Test Circuit for Pulse Response
0
1
2
3
4
5
6
(t) Time - (µs)
FIGURE 15. — STABILITY BOUNDARY CONDITIONS
IK
R1=10k
100
150
IK = 10mA
TA = 25°C
A VKA = VREF
B VKA = 5V
C VKA = 10V
D VKA = 15V
90
80
70
60
50
40
30
20
10
0
CL
B*
R2
VBATT
Stable
Stable
C*
D*
A*
Test Circuit for Curve A
150
IK
CL
VBATT
0.001
0.01
0.1
1
10
(CL) Load Capacitance - (µF)
* The areas under the curves represent conditions that may cause the
device to oscillate. For curves B, C, and D, R2 and V+ were adjusted to
establish the initial VKA and IK conditions with CL = 0. VBATT and CL were
then adjusted to determine the ranges of stability.
Test Circuit for Curves B, C, and D
Copyright © 1999
Rev. 1.3 9/99
10
MICROSEMI [ Microsemi ]
