STMicroelectronics TL431 Datasheet
Tangazo
Tangazo
Z
TO-92
(Plastic package)
L
SOT23-5
L
SOT23-3
TL431
TL432
Automotive adjustable voltage reference
C
SOT323-6
Datasheet
-
production data
Applications
Power supply
Industrial
Automotive
Description
The TL431 and TL432 are adjustable shunt voltage references with guaranteed temperature stability over the entire operating temperature range. The device temperature range is extended for the automotive version from -40 °C up to
+125 °C. The output voltage can be set to any value between 2.5 and 36 V with two external resistors. The TL431 and TL432 operate with a wide current range from 1 to 100 mA with a typical dynamic impedance of 0.22 Ω.
D
SO-8
(Batwing plastic micropackage)
Features
AEC-Q100 qualified
Adjustable output voltage: 2.5 to
36 V
Sink current capability: 1 to 100 mA
Typical output impedance: 0.22 Ω
0.5% voltage precision only on the TL431B version
1% and 2% voltage precision
Automotive temp. range -40 °C to +125 °C
February 2021
This is information on a product in full production.
DocID4467 Rev 15 1/22 www.st.com
Contents
Contents
TL431, TL432
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
Reference input voltage deviation overtemperature range . . . . . . . . . . . . . . . . . . . 8
SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TO-92 ammopack and tape and reel package information . . . . . . . . . . . 14
TO-92 (bulk) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SOT23-3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SOT23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SOT323-6 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/22 DocID4467 Rev 15
TL431, TL432
1 Schematic diagrams
Figure 1. TO-92 pin connections (top view)
Schematic diagrams
Figure 2. SO-8 batwing pin connections (top view)
SO8
Cathode 1 8 Ref
Anode 2
3
NC 4
7 Anode
6
5 NC
NC
NC
Cathode 3
1
2
Figure 3. SOT23-5 and SOT23-3 pin connections (top view)
SOT23-5 SOT23-3
5 Anode Cathode 1
4 Ref Ref 2 3 Anode
TL431 TL431 TL432
Figure 4. SOT323-6 pin connections (top view)
Figure 5. TL431 and TL432 block diagram
Cathode
Ref
Vref
Anode
DocID4467 Rev 15 3/22
22
Absolute maximum ratings and operating conditions
2
TL431, TL432
Absolute maximum ratings and operating conditions
Symbol
Table 1. Absolute maximum ratings
Parameter Value Unit
V
I
R
R
T
I ref thjc thja stg
T
KA k
J
ESD
Cathode to anode voltage
Continuous cathode current range
Reference input current range
Thermal resistance junction to case
TO-92
SO-8 batwing
SOT23-3L
SOT23-5L
SOT323-6L
Thermal resistance junction to ambient
TO-92
SO-8 batwing
SOT23-3L
SOT23-5L
SOT323-6L
Storage temperature range
Junction temperature
TL431IY, TL431AIY-T: HBM (human body model)
(1)
TL431-TL432: HBM (human body model)
MM: machine model
(2)
CDM: charged device model
(3)
37
-100 to +150
-0.05 to +10
57
30
136
67
110
200
85
248
157
221
-65 to +150
150
3000
2000
200
1500
V mA mA
°C/W
°C/W
°C
°C
V
1. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5 k resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
2. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). This is done for all couples of connected pin combinations while the other pins are floating.
3. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins.
Symbol
V
KA
I k
T oper
Table 2. Operating conditions
Parameter
Cathode to anode voltage
Cathode current
Operating free-air temperature range
TL431C/AC
TL431I/AI - TL432I/AI
TL431B
TL431IY/AIY
Value
V ref
to 36
1 to 100
0 to +70
-40 to +105
-40 to +125
-40 to +125
Unit
V mA
°C
4/22 DocID4467 Rev 15
TL431, TL432
3 Electrical characteristics
Electrical characteristics
Symbol
V ref
V ref
I ref
Table 3. TL431C (T amb
= 25 °C unless otherwise specified)
TL431C
Parameter
TL431AC
Min.
Typ. Max. Min.
Typ. Max.
Unit
Reference input voltage
V
KA
T min
= V ref
, I k
= 10 mA, T amb
= 25 °C
T amb
T max
Reference input voltage deviation overtemperature range
(1)
V
KA
= V ref
, I k
= 10 mA, T min
T amb
T max
Ratio of change in reference input voltage to change in cathode to anode voltage
I k
= 10 mA - V
KA
V
KA
= 10 V to V
= 36 V to 10 V ref
2.44
2.423
2.495
-
2.55
2.567
2.47
2.453
2.495
-
2.52
2.537
-
-2.7
-2
3
-1.4
-1
17
-
-
-
-2.7
-2
3
-1.4
-1
15
-
-
V mV mV/V
I
Reference input current k
= 10 mA, R1 = 10 k , R2 =
T amb
T min
= 25 °C
T amb
T max
-
-
1.8
-
4
5.2
-
-
1.8
-
4
5.2
µA
I ref
Reference input current deviation overtemperature range
I k
T
= 10 mA, R1 = 10 k , R2 = min
T amb
T max
0.4 1.2
I min
I off
ZKA
Minimum cathode current for regulation
V
KA
= V ref
Off-state cathode current
Dynamic impedance
(2)
V
KA
= V ref
, I k
= 1 to 100 mA, f 1 kHZ -
-
-
0.5
1
2.6
1000
0.22
0.5
Section : Reference input voltage deviation overtemperature range
.
2. The dynamic impedance is defined as
ZKA
=
V
I k
-
-
-
0.4
1.2
0.5
0.6
mA
2.6
1000 nA
0.22
0.5
µA
DocID4467 Rev 15 5/22
22
Electrical characteristics TL431, TL432
Symbol
V ref
V ref
Vka
I ref
Table 4. TL431B (T amb
= 25 °C unless otherwise specified)
TL431B
Parameter
Min.
Typ.
Max.
Reference input voltage
V
KA
T min
= V
T ref
, I k
= 10 mA, T amb
= 25 °C amb
T max
2.483
2.453
2.495
-
2.507
2.537
Reference input voltage deviation overtemperature range
(1)
V
KA
= V ref
, I k
= 10 mA, T min
T amb
T max
7 30
Ratio of change in reference input voltage to change in cathode to anode voltage
I k
= 10 mA - V
KA
V
KA
= 10 V to V
= 36 V to 10 V ref
I
Reference input current k
= 10 mA, R1 = 10 k , R2 =
T amb
T min
= 25 °C
T amb
T max
-2.7
-2
-
-
-1.4
-1
1.8
-
-
-
4
6.5
Unit
V mV mV/V
µA
I ref
Reference input current deviation overtemperature range
I k
T
= 10 mA, R1 = 10 k , R2 = min
T amb
T max
I min
I off
ZKA
Minimum cathode current for regulation
V
KA
= V ref
Off-state cathode current
Dynamic impedance
(2)
V
KA
= V ref
, I k
= 1 to 100 mA, f 1 kHZ
1. See definition of Section : Reference input voltage deviation overtemperature range
.
2. The dynamic impedance is defined as
ZKA
=
V
I k
-
-
-
-
0.8
0.45
180
0.22
2.5
0.6
500
0.5
µA mA nA
6/22 DocID4467 Rev 15
TL431, TL432 Electrical characteristics
Symbol
V ref
V ref
Table 5. TL431I/TL432I (T amb
= 25 °C unless otherwise specified)
TL431I/TL432I TL431AI/TL432AI
Parameter
Min.
Typ. Max. Min.
Typ. Max.
Reference input voltage
V
KA
T min
= V ref
, I k
T amb
= 10 mA, T amb
= 25 °C
T max
Reference input voltage deviation overtemperature range
(1)
V
KA
= V ref
, I k
=10 mA, T min
T amb
T max
Ratio of change in reference input voltage to change in cathode to anode voltage
I k
= 10 mA, V
KA
V
KA
= 10 V to V ref
= 36 V to 10 V
2.44
2.41
2.495
-
2.55
2.58
-
-2.7
-2
7
-1.4
-1
30
-
-
2.47
2.44
2.495
-
2.52
2.55
-
-2.7
-2
7
-1.4
-1
30
-
-
Unit
V mV mV/V
I ref
I
Reference input current k
= 10 mA, R1 = 10 k , R2 =
T amb
T min
= 25 °C
T amb
T max
-
1.8
-
4
6.5
I ref
I min
I off
ZKA
Reference input current deviation overtemperature range
I k
T
= 10 mA, R1 = 10 k , R2 = min
T amb
T max
Minimum cathode current for regulation
V
KA
= V ref
Off-state cathode current
Dynamic impedance
(2)
V
KA
= V ref
, I k
= 1 to 100 mA, f 1 kHZ
-
-
-
0.8
2.5
0.5
1
2.6
1000
0.22
0.5
1. See definition of Section : Reference input voltage deviation overtemperature range
below.
2. The dynamic impedance is defined as
ZKA
=
V
I k
-
-
-
-
-
-
1.8
-
4
6.5
0.8
1.2
0.5
0.7
mA
2.6
1000 nA
0.22
0.5
µA
µA
DocID4467 Rev 15 7/22
22
Electrical characteristics TL431, TL432
Symbol
Table 6. TL431IY (T amb
= 25 °C unless otherwise specified)
TL431IY TL431AIY
Parameter
Min.
Typ. Max. Min.
Typ. Max.
V ref
V ref
Reference input voltage
V
KA
T min
= V ref
, I k
T amb
= 10 mA
T max
Reference input voltage deviation overtemperature range
(1)
V
KA
= V ref
, I k
= 10 mA, T min
T amb
T max
Ratio of change in reference input voltage to change in cathode to anode voltage
I k
I k
= 10 mA, V
KA
= 10 mA, V
KA
= 10 V to V ref
= 36 V to 10 V
2.44
2.41
-
2.495
-
7
2.55
2.58
30
-2.7
-2
-1.4
-1 -
-
I ref
I ref
I min
I off
ZKA
Reference input current
I k
= 10 mA, R1 = 10 k , R2 =
T min
T amb
T max
Reference input current deviation overtemperature range
I k
= 10 mA, R1 = 10 k
T max
, R2 = T min
T amb
Minimum cathode current for regulation
V
KA
= V ref
Off-state cathode current
T min
T amb
T max
Dynamic impedance (2)
V
KA
= V ref
, I k
= 1 to 100 mA, F 1 kHz
-
-
-
-
-
-
-
1.8
-
0.5
4
6.5
0.8
2.5
1
2.6
1000
3000
0.22
0.5
1. See definition of Section : Reference input voltage deviation overtemperature range
below.
2. The dynamic impedance is defined as
ZKA
=
V
I k
2.47
2.44
2.495
-
2.52
2.55
-2.7
-2
-
-
-
-
-
-
-
-
7
-1.4
-1
1.8
-
30
-
-
4
6.5
0.8
1.2
0.5
0.6
mA
2.6
1000
3000
0.22
0.5
Unit
V mV mV/V
µA
µA nA
Reference input voltage deviation overtemperature range
V ref
is defined as the difference between the maximum and minimum values obtained over the full temperature range.
V ref
= V ref max
- V ref min
Figure 6. Reference input voltage deviation overtemperature range
8/22 DocID4467 Rev 15
TL431, TL432 Electrical characteristics
Input
Figure 7. Test circuit for V
KA
= V ref
R
I
K
=10mA
Output
Figure 8. Test circuit for programming mode
Input R Output
I
K
R1
I
REF V
KA
V
KA
R2
V
REF
V
REF
V
KA
= V
REF
+ R1 x I
REF
Figure 9. Test circuit for I off
V
KA
=36V
I
OFF
Figure 10. Test circuit for phase margin and voltage gain
10 F
I
K
=10mA
10 F
Input
V
REF
Figure 11. Test circuit for response time
0 mA
1 mA
I
K
=1mA
Figure 12. Reference voltage vs. temperature
2.54
2.52
2.50
I
V
K
KA
= V
REF
= 10 mA
2.48
2.46
2.44
-40 -20 0 20 40 60
Temperature ( C)
80 100 120
DocID4467 Rev 15 9/22
22
Electrical characteristics
Figure 13. Reference voltage vs. cathode current
TL431, TL432
Figure 14. Zoom on reference voltage vs. cathode current
Figure 15. Reference current vs. temperature
2.0
1.5
I
K
=10 mA
R
1
=10k
R2= +
1.0
0.5
0.0
-40 -20 0 20 40 60
Temperature °C
80 100 120
Figure 17. Ratio of change in V
V
KA ref
to change in
vs. temperature
0.0
-0.5
-1.0
-1.5
I
K
= 10 mA
-2.0
-40 -20 0 20 40 60
Temperature ( C)
80 100 120
Figure 16. Off-state cathode current vs. temperature
0.4
V
KA
= 36 V
V
REF
= 0 V
0.3
0.2
0.1
0.0
-40 -20 0 20 40 60
Temperature ( C)
80 100 120
Figure 18. Static impedance R
KA temperature
vs.
0.20
0.18
V
KA
=V
REF
0.16
0.14
0.12
0.10
-40 -20 0 20 40 60
Temperature ( C)
80 100 120
10/22 DocID4467 Rev 15
TL431, TL432
Figure 19. Minimum operating current vs. temperature
0.6
Electrical characteristics
Figure 20. Gain and phase vs. frequency
0.4
0.2
V
KA
= V
REF
0.0
-40 -20 0 20 40 60
Temperature ( C)
80 100 120
Figure 21. Stability behavior with capacitive loads
Figure 22. Maximum power dissipation
Figure 23. Pulse response for I k
= 1 mA
DocID4467 Rev 15 11/22
22
Package information
4 Package information
TL431, TL432
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com
.
ECOPACK is an ST trademark.
12/22 DocID4467 Rev 15
TL431, TL432
4.1 SO-8 package information
Figure 24. SO-8 package outline
Package information
Symbol
L
L1 e h k ccc c
D
E
E1
A
A1
A2 b
-
0.25
0.40
-
0°
-
0.10
1.25
0.28
0.17
4.80
5.80
3.80
Min.
Table 7. SO-8 package mechanical data
Dimensions
Millimeters
Typ.
1.27
-
-
1.04
-
-
-
4.90
6.00
3.90
-
-
-
-
Max.
-
0.50
1.27
-
8°
0.10
0.23
5.00
6.20
4.00
1.75
0.25
-
0.48
Min.
-
0.010
0.016
-
0°
-
-
0.004
0.049
0.011
0.007
0.189
0.228
0.150
Inches
Typ.
0.050
-
-
0.040
-
-
-
0.193
0.236
0.154
-
-
-
-
Max.
-
0.020
0.050
-
8°
0.004
0.069
0.010
-
0.019
0.010
0.197
0.244
0.157
DocID4467 Rev 15 13/22
22
Package information
4.2
TL431, TL432
TO-92 ammopack and tape and reel package information
Figure 25. TO-92 ammopack and tape and reel package outline
14/22
Table 8. TO-92 ammopack and tape and reel package mechanical data
Dimension (millimeters)
Symbol
Dimension (Inches)
Min.
Typ.
Max.
Min.
Typ.
Max.
-
-
5.7
8.5
2.4
-1
-1
17.5
15.5
-
3.8
-
2.5
11.7
12.4
5.95
-
-
-
-
H0
H1
DO
L1
W0
W1
W2
H
I1
P
PO
P2
F1/F2
h
P
W
T d
A1
A
-
-
6
9
2.5
0
0
18.0
16
-
4.0
-
-
12.7
12.7
6.35
-
-
-
0.45
6.3
9.75
0.5
20
2.8
1
1
19.0
16.5
25
4.2
11
-
13.7
13
6.75
5.0
5.0
4.0
-
0.094
-0.039
-0.039
0.689
0.224
0.335
-
-
0.098
0.461
0.488
0.234
-
-
-
-
0.610
-
0.150
-
0.098
0
0
0.709
0.236
0.354
-
-
-
-
-
0.018
-
0.500
0.500
0.250
0.630
-
0.157
-
0.110
0.039
0.039
0.748
0.248
0.384
0.020
0.787
0.197
0.197
0.157
-
-
0.539
0.512
0.266
0.650
0.984
0.165
0.433
DocID4467 Rev 15
TL431, TL432
4.3 TO-92 (bulk) package information
Figure 26. TO-92 bulk package outline
Package information
Symbol
E
F a
C
D
A
B
0067407_H
Min.
-
-
-
4.40
12.70
-
-
Table 9. TO-92 bulk package mechanical data
Dimension (millimeters) Dimension (Inches)
Typ.
-
-
-
1.35
-
2.54
-
Max.
-
4.70
-
-
-
3.70
0.5
Min.
-
-
-
0.173
0.500
-
-
Typ.
-
-
-
0.053
-
0.100
-
Max.
-
0.185
-
-
-
0.146
0.019
DocID4467 Rev 15 15/22
22
Package information
4.4 SOT23-3 package information
Figure 27. SOT23-3 package outline
TL431, TL432
16/22
Symbol c
D
E
E1
A
A1
A2 b e e1
L
L1 k
Min.
0.08
2.80
2.10
1.20
0.89
0.01
0.88
0.30
-
-
0.40
-
0d
Table 10. SOT23-3 package mechanical data
Dimensions
Millimeters
Typ.
-
2.90
-
1.30
-
-
0.95
-
0.95
1.90
0.50
0.54
-
Max.
0.20
3.04
2.64
1.40
1.12
0.10
1.02
0.50
-
-
0.60
-
8d
Min.
0.035
0.0004
0.035
0.012
0.003
0.110
0.083
0.047
0.016
-
-
-
-
Inches
Typ.
-
-
0.037
-
-
0.114
-
0.051
0.037
0.075
0.020
0.021
-
Max.
0.044
0.004
0.040
0.020
0.008
0.120
0.104
0.055
0.024
-
-
-
-
DocID4467 Rev 15
TL431, TL432
4.5 SOT23-5 package information
Figure 28. SOT23-5 package outline
Package information
L
c
D
E e
H
A
A1
A2 b
Symbol
7049676_I
Min.
0.90
-
0.90
0.35
0.09
2.80
1.50
-
2.60
0.10
0 degrees
Table 11. SOT23-5 package mechanical data
Dimensions
Millimeters Inches
Typ.
-
-
-
-
-
-
-
0.95
-
-
-
Max.
1.45
0.15
1.30
0.50
0.20
3.05
1.75
-
3.00
0.60
10 degrees
Min.
0.035
-
0.035
0.014
0.004
0.110
0.059
-
0.102
0.004
-
Typ.
-
-
-
-
-
-
-
0.037
-
-
-
Max.
0.057
0.006
0.051
0.020
0.008
0.120
0.069
-
0.118
0.024
-
DocID4467 Rev 15 17/22
22
Package information
4.6 SOT323-6 package information
Figure 29. SOT323-6 package outline
TL431, TL432
18/22
Symbol
D
E e b c
A
A1
A2
HE
L
Q1
7095021_E
Min.
0.80
0
0.80
0.15
0.10
1.80
1.15
-
1.80
0.10
0.10
Table 12. SOT323-6 package mechanical data
Dimensions
Millimeters
Typ.
-
-
-
-
0.65
-
-
-
-
-
-
Max.
1.10
0.10
1.00
0.30
0.18
2.20
1.35
-
2.40
0.40
0.40
Min.
0.031
-
0.031
0.006
0.004
0.071
0.045
-
0.071
0.004
0.004
Inches
Typ.
-
-
-
-
-
-
-
-
-
-
0.026
DocID4467 Rev 15
Max.
0.043
0.004
0.039
0.012
0.007
0.087
0.053
-
0.094
0.016
0.016
TL431, TL432
5 Ordering information
Order code
TL431AIZ
TL431AIZT
TL431AIZ-AP
TL431IL3T
TL431AIL3T
TL432IL3T
TL432AIL3T
TL431IL5T
TL431AIL5T
TL431ICT
TL431AICT
TL431BL3T
TL431CD
TL431CDT
TL431ACD
TL431ACDT
TL431CZ
TL431CZT
TL431CZ-AP
TL431ACZ
TL431ACZT
TL431ACZ-AP
TL431CL3T
TL431ACL3T
TL431CL5T
TL431ACL5T
TL431CCT
TL431ACCT
TL431ID
TL431IDT
TL431AID
TL431AIDT
TL431IZ
TL431IZT
TL431IZ-AP
Table 13. Order codes
Accuracy (%) Temperature range Package
2
SO-8
1
2
1
1
2
1
2
1
2
2
1
2
1
2
1
2
1
2
2
1
1
0.5
0 °C to +70 °C
-40 °C to +105 °C
-40 °C to +125 °C
TO-92
SOT23-3
SOT23-5
SOT323-6
SO-8
TO-92
SOT23-3
SOT23-3
SOT23-5
SOT323-6
SOT23-3
Ordering information
Packing
Tube or
Tape and reel
Marking
431C
431AC
TL431C
Bulk or
Tape or
Ammopack
Tape
Tube or tape and reel
TL431AC
L19
L18
L19
L18
31C
31C
431I
431AI
TL431I
Bulk or
Tape or
Ammopack
Tape
TL431AI
L17
L16
32I
32AI
L17
L16
31I
31I
1B
DocID4467 Rev 15 19/22
22
Ordering information TL431, TL432
Order code
TL431IYD (1)
TL431IYDT
(1)
TL431AIYD (1)
TL431AIYDT
(1)
2
1
Table 13. Order codes (continued)
Accuracy (%) Temperature range
-40 °C to +125 °C
Package
SO-8
(Automotive grade level)
Packing
Tube or tape and reel
Marking
431IY
431AIY
1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC
Q001 and Q 002 or equivalent.
20/22 DocID4467 Rev 15
TL431, TL432
6 Revision history
Date
01-Mar-2002
01-Nov-2005
13-Dec-2006
08-Jun-2007
25-Feb-2008
04-Jun-2009
09-Jun-2009
14-Mar-2011
07-Oct-2011
17-Nov-2011
03-Dec-2012
07-Dec-2017
10-Sep-2020
23-Sep-2020
08-Feb-2021
Revision history
Revision
1
2
3
4
5
6
13
14
15
7
8
9
10
11
12
Table 14. Document revision history
Changes
Initial release.
PPAP references inserted in order codes table on cover page.
Corrected TO-92 package information.
Specified that SO-8 package is batwing package.
In electrical characteristics tables, moved negative values from max column to min column.
Corrected captions of
Figure 7
and of
Figure 18
.
Added footnote to Table 8: TO-92 bulk package mechanical data .
Corrected SO-8 package mechanical data.
Corrected footnote for automotive grade order codes in order code table.
Corrected packing information for TO-92 devices in order code table.
Changed I
MIN
to 0.6 mA in Table 3 and Table 4 .
Increased temperature range to 125°C in temperature curves.
Added
Table 5
, dedicated to automotive version.
Increased high temperature for automotive range up to +125 °C in Table 5 and in
Table 12: Order codes
.
Inserted accuracy column in Table 12 .
Corrected minor error in package column in
Table 12
.
Added
Figure 3 on page 3
,
Section 4.4 on page 15
and
Section 4.5 on page
16
.
Added new package mechanical data Table 11 on page 17 and Figure 29 on page 17
.
Updated Table 12 on page 18 .
Added new part number TL432, new order code
Table 12 on page 18
and pin connection for TL432 Figure 3 on page 3 .
Removed temperature range in title
Table 3 on page 5
,
Table 4 on page 6
and
Table 5 on page 7
.
Updated main title
on page 1
and
Section : Features on page 1
, (added
“automotive” - AEC-Q100 qualified).
Updated
Table 1 on page 4
(updated R thja and R thjc
).
Minor modifications throughout document.
Added the part number TL431B and all its occurrences throughout the document.
Updated Table 4: TL431B (Tamb = 25 °C unless otherwise specified).
Updated
.
DocID4467 Rev 15 21/22
22
TL431, TL432
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22/22 DocID4467 Rev 15
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