TL1431-Q1 Datasheet, PDF (10/19 Pages) Texas Instruments – PRECISION PROGRAMMABLE REFERENCE

TL1431ĆQ1
PRECISION PROGRAMMABLE REFERENCE
SLVS534B − JUNE 2004 − REVISED APRIL 2008
TYPICAL CHARACTERISTICS
PULSE RESPONSE
6
TA = 25°C
Input
VI
5
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
GND
TEST CIRCUIT FOR PULSE RESPONSE
STABILITY BOUNDARY CONDITIONS^†
100
A-VKA = VI(ref)
90 ^{B-VKA = 5 V}
C-VKA = 10 V
80 D-VKA = 15 V
IKA = 10 mA
TA = 25°C
70
Stable
60
Stable
B
C
50
40
A
30
D
20
10
0
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+ are adjusted to
establish the initial VKA and IKA conditions, with CL = 0. VBATT and CL
then are adjusted to determine the ranges of stability.
Figure 15
150 Ω
IKA
VI
+
CL
VBATT
−
TEST CIRCUIT FOR CURVE A
R1 =
10 kΩ
CL
R2
IKA
150 Ω
VI
+
VBATT
−
TEST CIRCUIT FOR CURVES B, C, AND D
10
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