TL1431_10 Datasheet, PDF (11/27 Pages) Texas Instruments – PRECISION PROGRAMMABLE REFERENCE

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6
T_A = 25°C
5
PULSE RESPONSE
Input
TL1431
PRECISION PROGRAMMABLE REFERENCE
SLVS062L – DECEMBER 1991 – REVISED OCTOBER 2007
V_I
220 Ω
Output
4
3
Output
Pulse
Generator
f = 100 kHz
50 Ω
2
1
0
01 2 3 45 67
t − Time − µs
Figure 14.
STABILITY BOUNDARY CONDITIONS
100
A-V_KA = V_I(ref)
90 ^B-VKA ^{= 5 V}
C-V_KA = 10 V
80 D-VKA = 15 V
I_KA = 10 mA
T_A = 25°C
70
Stable
60
Stable
B
C
50
40
A
30
D
20
10
0
0.001
0.01
0.1
1
10
C_L − Load Capacitance − µF
GND
TEST CIRCUIT FOR PULSE RESPONSE
150 Ω
I_KA
V_I
+
C_L
V_BATT
−
TEST CIRCUIT FOR CURVE A
R1 =
10 kΩ
C_L
R2
I_KA
150 Ω
V_I
+
V_BATT
−
TEST CIRCUIT FOR CURVES B, C, AND D
A. The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C, and D, R2 and V+ are
adjusted to establish the initial V_KA and I_KA conditions, with C_L = 0. V_BATT and C_L then are adjusted to determine the ranges of
stability.
Figure 15.
Copyright © 1991–2007, Texas Instruments Incorporated
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