TL431 / TL431A / TL431B
®
Precision programmable References
TM
PRODUCTION DATA SHEET
TYPICAL CHARACTERISTICS
6
5
Output
4
3
220
2
1
Pulse
Generator
f = 100kHz
50
0
3
2
GND
1
0
Test Circuit for Pulse Response
05
13
2
4
6
(t) Time - (µs)
Figure 14 – Pulse Response
100
90
80
70
60
50
40
30
20
10
0
IK = 10mA
TA = 25 °C
A V KA = VREF
IK
R1=10k
B V KA = 5V
C V KA = 10V
D V KA = 15V
150
B*
CL
Stable
Stable
R2
VBATT
C*
A*
Test Circuit for Curve A
150
D*
IK
0.001
0.01
0.1
1
10
CL
VBATT
(CL) Load Capacitance - (µF)
Figure 15 – Stability Boundary Conditions
*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 Curve B, C, D
Copyright © 1999
Rev. 1.4, 2006-09-26
Microsemi
Page 10
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
MICROSEMI [ Microsemi ]
