TL431_06 Datasheet, PDF (10/11 Pages) ON Semiconductor – Programmable Precision References

TL431 / TL431A / TL431B
TM
®
Precision programmable References
PRODUCTION DATA SHEET
TYPICAL CHARACTERISTICS
6
5
4
220
3
2
1
Pulse
Generator
50
f = 100kHz
0
3
2
1
0
05 13 2
4
6
(t) Time - (µs)
Figure 14 – Pulse Response
Test Circuit for Pulse Response
Ou tput
GND
100
90
A V _KA = V _REF
B V _KA = 5V
80
C V _KA = 10V
D V _KA = 15V
70
Stable
60
A*
50
B*
C*
I_K = 10mA
T_A = 25 °C
Stable
40
30
D*
20
10
0
0.001
0.01
0.1
1
10
(C_L) 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 V_KA and I_K conditions with C_L = 0. V_BATT and C_L were then adjusted to
determine the ranges of stability.
R1=10k
I_K
C_L
R2
150
V_BATT
Test Circuit for Curve A
150
I_K
C_L
V_BATT
Test Circuit for Curve B, C, D
Copyright © 1999
Rev. 1.4, 2006-09-26
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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