TL431 family
Adjustable precision shunt regulators
Rev. 6 — 9 January 2019
Product data sheet
1. Product profile
1.1. General description
Three-terminal shunt regulator family with an output voltage range between
Vref = 2.495 V and 36 V, to be set by two external resistors.
Table 1. Product overview
Reference voltage Temperature range (Tamb)
tolerance (Vref)
0 °C to 70 °C
-40 °C to 85 °C
-40 °C to 125 °C
Pinning configuration
(see Table 5)
2.0 %
TL431QDBZR
normal pinning
TL431FDT
normal pinning
TL431MFDT
mirrored pinning
TL431AQDBZR
normal pinning
TL431AFDT
normal pinning
TL431AMFDT
mirrored pinning
TL431BQDBZR
normal pinning
TL431BFDT
normal pinning
TL431BMFDT
mirrored pinning
1.0 %
0.5 %
TL431CDBZR
TL431ACDBZR
TL431BCDBZR
TL431IDBZR
TL431AIDBZR
TL431BIDBZR
1.2. Features and benefits
•
•
•
•
•
•
•
•
Programmable output voltage up to 36 V
Three different reference voltage tolerances:
• Standard grade: 2 %
• A-Grade: 1 %
• B-Grade: 0.5 %
Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C)
Low output noise
Typical output impedance: 0.2 Ω
Sink current capability: 1 mA to 100 mA
AEC-Q100 qualified (grade 1)
TL431 family
Nexperia
Adjustable precision shunt regulators
1.3. Applications
•
•
•
•
Shunt regulator
Precision current limiter
Precision constant current sink
Isolated feedback loop for Switch Mode Power Supply (SMPS)
1.4. Quick reference data
Table 2. Quick reference data
Symbol Parameter
VKA
cathode-anode voltage
IK
cathode current
Vref
reference voltage
Conditions
VKA = Vref; IK = 10 mA;
Tamb = 25 °C
Min
Typ
Max
Unit
Vref
-
36
V
1
-
100
mA
2440
2495
2550
mV
•
Standard-Grade (2.0 %)
•
A-Grade (1.0 %)
2470
2495
2520
mV
•
B-Grade (0.5 %)
2483
2495
2507
mV
2. Pinning information
Table 3. Pinning
Pin
Symbol
Description
Simplified outline
Graphic symbol
SOT23; normal pinning: All types without MFDT ending
1
K
cathode
2
REF
reference
3
A
anode
REF
3
A
K
006aab355
1
2
SOT23; mirrored pinning: All types with MFDT ending
1
REF
reference
2
K
cathode
3
A
anode
A
Product data sheet
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Rev. 6 — 9 January 2019
K
006aab355
1
TL431_FAM
REF
3
2
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TL431 family
Nexperia
Adjustable precision shunt regulators
3. Ordering information
Table 4. Ordering information
Type number
Package
Name
TL431CDBZR
Description
Version
TO-236AB plastic surface-mounted package; 3 leads
SOT23
TL431IDBZR
TL431QDBZR
TL431FDT
TL431MFDT
TL431ACDBZR
TL431AIDBZR
TL431AQDBZR
TL431AFDT
TL431AMFDT
TL431BCDBZR
TL431BIDBZR
TL431BQDBZR
TL431BFDT
TL431BMFDT
4. Marking
Table 5. Marking codes
Type number
Marking code [1]
Type number
Marking code [1]
TL431CDBZR
CA%
TL431AFDT
AS%
TL431IDBZR
CB%
TL431AMFDT
AV%
TL431QDBZR
CC%
TL431BCDBZR
CG%
TL431FDT
AR%
TL431BIDBZR
CH%
TL431MFDT
AU%
TL431BQDBZR
CJ%
TL431ACDBZR
CD%
TL431BFDT
AT%
TL431AIDBZR
CE%
TL431BMFDT
AW%
TL431AQDBZR
CF%
-
-
[1]
TL431_FAM
Product data sheet
% = placeholder for manufacturing site code.
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TL431 family
Nexperia
Adjustable precision shunt regulators
5. Functional diagram
The TL431 family comprises a range of 3-terminal adjustable shunt regulators, with specified
thermal stability over applicable automotive and commercial temperature ranges. The output
voltage can be set to any value between Vref (approximately 2.5 V) and 36 V with two external
resistors (see Figure 8). These devices have a typical output impedance of 0.2 Ω. Active output
circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements
for Zener diodes in many applications like on-board regulation, adjustable power supplies and
switching power supplies.
CATHODE
REF
Vref
ANODE
Fig. 1.
006aab569
Functional diagram
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
6. Limiting values
Table 6. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
VKA
Conditions
Min
Max
Unit
cathode-anode voltage
-
37
V
IK
cathode current
-100
150
mA
Iref
reference current
-0.05
Ptot
total power dissipation
10
mA
[1] -
350
mW
[2] -
580
mW
[3] -
950
mW
-
150
°C
TL431XCDBZR
0
+70
°C
TL431XIDBZR
-40
+85
°C
TL431XQDBZR
TL431XFDT
-40
+125
°C
storage temperature
-65
+150
°C
Tj
junction temperature
Tamb
ambient temperature
Tstg
[1]
[2]
[3]
Tamb ≤ 25 °C
Device mounted on an FR4 Printed-Circuit Board (PCB), single-sided copper, tin-plated and standard
footprint.
2
Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for anode 1 cm .
Device mounted on a ceramic PCB, Al2O3, standard footprint.
006aab570
1250
Ptot
(mW)
1000
(1)
750
(2)
500
(3)
250
0
- 75
- 25
25
75
125
175
Tamb (°C)
1. Ceramic PCB, Al2O3, standard footprint
2
2. FR4 PCB, mounting pad for anode 1 cm
3. FR4 PCB, standard footprint
Fig. 2.
Power derating curves
Table 7. ESD maximum ratings
Tamb = 25 °C unless otherwise specified.
TL431_FAM
Product data sheet
Symbol
Parameter
Conditions
Min
Max
Unit
VESD
electrostatic discharge voltage
MIL-STD-883
(human body model)
-
4
kV
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TL431 family
Nexperia
Adjustable precision shunt regulators
7. Recommended operating conditions
Table 8. Operating conditions
Symbol
Parameter
Conditions
Min
Max
Unit
VKA
cathode-anode voltage
Vref
36
V
IK
cathode current
1
100
mA
8. Thermal characteristics
Table 9. Thermal characteristics
Symbol
Parameter
Conditions
Rth(j-a)
in free air
Rth(j-sp)
[1]
[2]
[3]
[4]
TL431_FAM
Product data sheet
thermal resistance from
junction to ambient
thermal resistance from
junction to solder point
Min
Typ
Max
Unit
[1] -
-
360
K/W
[2] -
-
216
K/W
[3] -
-
132
K/W
[4] -
-
50
K/W
Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
2
Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for anode 1 cm .
Device mounted on a ceramic PCB, Al2O3, standard footprint.
Soldering point of anode.
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TL431 family
Nexperia
Adjustable precision shunt regulators
9. Characteristics
Table 10. Characteristics
Tamb = 25 °C unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Standard-Grade (2.0 %): TL431CDBZR; TL431IDBZR; TL431QDBZR; TL431FDT; TL431MFDT
Vref
reference voltage
VKA = Vref; IK = 10 mA
2440
2495
2550
mV
ΔVref
reference voltage variation
VKA = Vref; IK = 10 mA
TL431CDBZR
Tamb = 0 °C to 70 °C
-
9
16
mV
TL431IDBZR
Tamb = -40 °C to 85 °C
-
17
34
mV
TL431QDBZR
Tamb = -40 °C to 125 °C
ΔVKA = 10 V to Vref
-
-1.4
-2.7
mV/V
TL431FDT
TL431MFDT
ΔVref/ΔVKA reference voltage variation
to cathode -anode voltage
variation ratio
IK = 10 mA
ΔVKA = 36 V to 10 V
-
-1
-2
mV/V
Iref
reference current
IK = 10 mA;
R1 = 10 kΩ; R2 = open
-
2
4
μA
ΔIref
reference current variation
IK = 10 mA; R1 = 10 kΩ; R2 = open
TL431CDBZR
Tamb = 0 °C to 70 °C
-
0.4
1.2
μA
TL431IDBZR
Tamb = -40 °C to 85 °C
-
0.8
2.5
μA
TL431QDBZR
Tamb = -40 °C to 125 °C
TL431FDT
TL431MFDT
IK(min)
minimum cathode current
VKA = Vref
-
0.4
1
mA
Ioff
off-state current
VKA = 36 V; Vref = 0
-
0.1
1
μA
ZKA
dynamic cathode-anode
impedance
IK = 0.1 mA to 100 mA;
VKA = Vref; f < 1 kHz
-
0.20
0.5
Ω
A-Grade (1 %): TL431ACDBZR; TL431AIDBZR; TL431AQDBZR; TL431AFDT; TL431AMFDT
Vref
reference voltage
VKA = Vref; IK = 10 mA
2470
2495
2520
mV
ΔVref
reference voltage variation
VKA = Vref; IK = 10 mA
TL431ACDBZR
TL431AIDBZR
Tamb = 0 °C to 70 °C
-
9
16
mV
Tamb = -40 °C to 85 °C
-
17
34
mV
TL431AQDBZR
Tamb = -40 °C to 125 °C
ΔVKA = 10 V to Vref
-
-1.4
-2.7
mV/V
TL431AFDT
TL431AMFDT
ΔVref/ΔVKA reference voltage variation
to cathode-anode voltage
variation ratio
IK = 10 mA
ΔVKA = 36 V to 10 V
-
-1.0
-2.0
mV
Iref
IK = 10 mA;
R1 = 10 kΩ; R2 = open
-
2.0
4.0
μA
reference current
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ΔIref
reference current variation
IK = 10 mA; R1 = 10 kΩ; R2 = open
TL431ACDBZR
Tamb = 0 °C to 70 °C
-
0.4
1.2
μA
TL431AIDBZR
Tamb = -40 °C to 85 °C
TL431AQDBZR
Tamb = -40 °C to 125 °C
-
0.8
2.5
μA
-
0.4
0.6
mA
TL431AFDT
TL431AMFDT
IK(min)
minimum cathode current
VKA = Vref
TL431ACDBZR
Tamb = 0 °C to 70 °C
TL431AIDBZR
Tamb = -40 °C to 85 °C
TL431AQDBZR
Tamb = -40 °C to 125 °C
TL431AFDT
TL431AMFDT
Ioff
off-state current
VKA = 36 V; Vref = 0
-
0.1
0.5
μA
ZKA
dynamic cathode-anode
impedance
IK = 0.1 mA to 100 mA;
VKA = Vref; f < 1 kHz
-
0.2
0.5
Ω
2483
2495
2507
mV
B-Grade (0.5 %): TL431BCDBZR; TL431BIDBZR; TL431BFDT; TL431BMFDT
Vref
reference voltage
VKA = Vref; IK = 10 mA
ΔVref
reference voltage variation
VKA = Vref; IK = 10 mA
TL431BCDBZR
Tamb = 0 °C to 70 °C
-
9
16
mV
TL431BIDBZR
Tamb = -40 °C to 85 °C
-
17
34
mV
TL431BQDBZR
Tamb = -40 °C to 125 °C
ΔVKA = 10 V to Vref
-
-1.4
-2.7
mV/V
TL431BFDT
TL431BMFDT
ΔVref/ΔVKA reference voltage variation
to cathode-anode voltage
variation ratio
IK = 10 mA
ΔVKA = 36 V to 10 V
-
-1.0
-2.0
mV/V
Iref
reference current
IK = 10 mA;
R1 = 10 kΩ; R2 = open
-
2.0
4.0
μA
ΔIref
reference current variation
IK = 10 mA; R1 = 10 kΩ; R2 = open
TL431BCDBZR
Tamb = 0 °C to 70 °C
-
0.4
1.2
μA
TL431BIDBZR
Tamb = -40 °C to 85 °C
-
0.8
2.5
μA
TL431BQDBZR
Tamb = -40 °C to 125 °C
-
0.4
0.6
mA
TL431BFDT
TL431BMFDT
IK(min)
minimum cathode current
VKA = Vref
TL431BCDBZR
Tamb = 0 °C to 70 °C
TL431BIDBZR
Tamb = -40 °C to 85 °C
TL431BQDBZR
Tamb = -40 °C to 125 °C
TL431BFDT
TL431BMFDT
Ioff
off-state current
VKA = 36 V; Vref = 0
-
0.1
0.5
μA
ZKA
dynamic cathode-anode
impedance
IK = 0.1 mA to 100 mA;
VKA = Vref; f < 1 kHz
-
0.2
0.5
Ω
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
aaa-028484
2.60
Vref
(V)
IK
(mA)
2.56
100
2.52
50
2.48
0
2.44
- 50
2.40
-75
-25
25
75
125
Tamb (°C)
- 100
IK = 10 mA; VKA = Vref
Fig. 3.
006aab572
150
-2
-1
0
1
2
VKA (V)
3
VKA = Vref; Tamb = 25 °C
Reference voltage as a function of ambient
temperature; typical values
INPUT
Fig. 4.
VKA
Cathode current as a function of cathode-anode
voltage; typical values
aaa-028485
5
Iref
(µA)
IK
4
3
Vref
2
GND
1
006aab573
IK = 10 mA; VKA = Vref
Fig. 5.
0
-75
Test circuit to Figures 3 and 4
-25
25
75
125
Tamb (°C)
IK = 10 mA; R1 = 10 kΩ; R2 = open
Fig. 6.
TL431_FAM
Product data sheet
Reference current as a function of ambient
temperature; typical values
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TL431 family
Nexperia
Adjustable precision shunt regulators
INPUT
006aab575
0
VKA
IK
ΔVref
(mV)
R1
Iref
- 20
R2
Vref
- 40
GND
006aab576
- 60
0
10
20
30
VKA (V)
40
Fig. 8.
Test circuit to Figures 6 and 7
IK = 10 mA; Tamb = 25 °C
Fig. 7.
Reference voltage variation as a function of
cathode-anode voltage; typical values
INPUT
aaa-028486
250
Ioff
(nA)
VKA
Ioff
200
150
100
GND
50
006aab578
VKA = 36 V; Vref = 0 V
0
-75
-25
25
75
125
Tamb (°C)
Fig. 10. Test circuit to Figure 9
VKA = 36 V; Vref = 0 V
Fig. 9.
Off-state current as a function of ambient
temperature; typical values
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
aaa-028490
6
220 Ω
VKA
(1)
VI
VO
(V)
PULSE
GENERATOR
f = 100 kHz
4
50 Ω
(2)
GND
2
006aab581
Tamb = 25 °C
Fig. 12. Test circuit to Figure 11
0
-1
1
3
5
t (µs)
7
1. input
2. output
Tamb = 25 °C
Fig. 11. Input voltage and output voltage as a function
of time; typical values
VKA
aaa-028487
60
IK
Av
(dB)
9 µF
40
20
GND
aaa-017869
IK = 10 mA; Tamb = 25 °C
0
Fig. 14. Test circuit to Figure 13
1
10
102
103
f (kHz)
104
IK = 10 mA; Tamb = 25 °C
Fig. 13. Voltage amplification as a function of
frequency; typical values
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
aaa-028488
102
VKA
1 kΩ
IK
ZKA
(Ω)
50 Ω
10
GND
1
006aab587
IK = 10 mA; Tamb = 25 °C
Fig. 16. Test circuit to Figure 15
10-1
1
10
102
103
f (kHz)
104
IK = 10 mA; Tamb = 25 °C
Fig. 15. Dynamic cathode-anode impedance as a
function of frequency; typical values
aaa-028489
100
IK
(mA)
(1)
(1)
80
60
40
stable
stable
oscillation
20
0
1
102
10
103
104
CL (nF)
Tamb = 25 °C
(1) VKA = Vref
VKA = 5 V; no oscillation
VKA = 10 V; no oscillation
VKA = 15 V; no oscillation
Fig. 17. Cathode current as a function of load capacitance, typical values
150 Ω
IK
R1 = 10 kΩ
CL
IK
150 Ω
CL
VBATT
VBATT
R2
GND
VKA = Vref; Tamb = 25 °C
Fig. 18. Test circuit to Figure 17
TL431_FAM
Product data sheet
GND
006aab589
006aab590
VKA > 5 V; stable operation; T amb = 25 °C
Fig. 19. Test circuit to Figure 17
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TL431 family
Nexperia
Adjustable precision shunt regulators
10. Application information
V+
VOUT
R1
R2
006aab592
Fig. 20. Shunt regulator
V+
VOUT
R1
R2
006aab593
Fig. 21. Series pass regulator
V+
VOUT
VIN
006aab594
Tth = Vref
TIN < Vref => VOUT > 0
TIN > Vref => VOUT ≅ 2
Fig. 22. Single-supply comparator with temperature-compensated threshold
V+
RCL
IOUT
006aab595
Fig. 23. Constant current souce
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
V+
VOUT
R1
R2
006aab596
Fig. 24. High-current shunt regulator
ISINK
V+
RS
006aab597
Fig. 25. Constant current sink
REGULATOR LINE
VOUT
GND
R3
R1
REF
R2
GND
006aac482
Fig. 26. TL431 in control loop of SMPS
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
11. Test information
Quality information
This product has been qualified in accordance with the Automotive Electronics Council (AEC)
standard Q100 - Failure mechanism based stress test qualification for integrated circuits, and is
suitable for use in automotive applications.
12. Package outline
3.0
2.8
1.1
0.9
3
0.45
0.15
2.5 1.4
2.1 1.2
1
2
0.48
0.38
1.9
Dimensions in mm
0.15
0.09
04-11-04
Fig. 27. Package outline SOT23 (TO-236AB)
13. Soldering
3.3
2.9
1.9
solder lands
3
2
1.7
solder resist
solder paste
0.6
(3×)
0.7
(3×)
occupied area
Dimensions in mm
0.5
(3×)
0.6
(3×)
1
sot023_fr
Fig. 28. Reflow soldering footprint SOT23 (TO-236AB)
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
2.2
1.2
(2×)
1.4
(2×)
solder lands
4.6
solder resist
2.6
occupied area
Dimensions in mm
1.4
preferred transport direction during soldering
2.8
4.5
sot023_fw
Fig. 29. Wave soldering footprint SOT23 (TO-236AB)
TL431_FAM
Product data sheet
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TL431 family
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Adjustable precision shunt regulators
14. Revision history
Table 11. Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
TL431_8_FAM v.6
20190109
Product data sheet
-
TL431FAM v.5
Modifications
•
•
•
•
TL431SDT and TL431MSDT removed
Figures of TL431XDBZR and TL431XFDT updated
The format of this data sheet has been redesigned to comply with the identity guidelines of
Nexperia.
Legal texts have been adapted to the new company name where appropriate.
TL431FAM v.5
20150901
Product data sheet
-
TL431FAM v.4
TL431FAM v.4
20110630
Product data sheet
-
TL431FAM v.3
TL431FAM v.3
20101105
Product data sheet
-
TL431FAM v.2
TL431FAM v.2
20100120
Product data sheet
-
TL431FAM v.1
TL431FAM v.1
20090806
Product data sheet
-
-
TL431_FAM
Product data sheet
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TL431 family
Nexperia
Adjustable precision shunt regulators
equipment, nor in applications where failure or malfunction of an Nexperia
product can reasonably be expected to result in personal injury, death or
severe property or environmental damage. Nexperia and its suppliers accept
no liability for inclusion and/or use of Nexperia products in such equipment or
applications and therefore such inclusion and/or use is at the customer's own
risk.
15. Legal information
Data sheet status
Document status
[1][2]
Product
status [3]
Definition
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Objective [short]
data sheet
Development
This document contains data from
the objective specification for
product development.
Preliminary [short]
data sheet
Qualification
This document contains data from
the preliminary specification.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
or warranty that such applications will be suitable for the specified use
without further testing or modification.
Product [short]
data sheet
Production
This document contains the product
specification.
[1]
[2]
[3]
Please consult the most recently issued document before initiating or
completing a design.
The term 'short data sheet' is explained in section "Definitions".
The product status of device(s) described in this document may have
changed since this document was published and may differ in case of
multiple devices. The latest product status information is available on
the internet at https://www.nexperia.com.
Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any representations or
warranties as to the accuracy or completeness of information included herein
and shall have no liability for the consequences of use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is
intended for quick reference only and should not be relied upon to contain
detailed and full information. For detailed and full information see the relevant
full data sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and customer have explicitly
agreed otherwise in writing. In no event however, shall an agreement be
valid in which the Nexperia product is deemed to offer functions and qualities
beyond those described in the Product data sheet.
Disclaimers
Limited warranty and liability — Information in this document is believed
to be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy
or completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no responsibility
for the content in this document if provided by an information source outside
of Nexperia.
In no event shall Nexperia be liable for any indirect, incidental, punitive,
special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal
or replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia accepts no liability for
any assistance with applications or customer product design. It is customer’s
sole responsibility to determine whether the Nexperia product is suitable
and fit for the customer’s applications and products planned, as well as
for the planned application and use of customer’s third party customer(s).
Customers should provide appropriate design and operating safeguards to
minimize the risks associated with their applications and products.
Nexperia does not accept any liability related to any default, damage, costs
or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party
customer(s). Customer is responsible for doing all necessary testing for the
customer’s applications and products using Nexperia products in order to
avoid a default of the applications and the products or of the application or
use by customer’s third party customer(s). Nexperia does not accept any
liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those
given in the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — Nexperia products are
sold subject to the general terms and conditions of commercial sale, as
published at http://www.nexperia.com/profile/terms, unless otherwise agreed
in a valid written individual agreement. In case an individual agreement is
concluded only the terms and conditions of the respective agreement shall
apply. Nexperia hereby expressly objects to applying the customer’s general
terms and conditions with regard to the purchase of Nexperia products by
customer.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
Trademarks
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards customer
for the products described herein shall be limited in accordance with the
Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make changes
to information published in this document, including without limitation
specifications and product descriptions, at any time and without notice. This
document supersedes and replaces all information supplied prior to the
publication hereof.
Suitability for use in automotive applications — This Nexperia product
has been qualified for use in automotive applications. Unless otherwise
agreed in writing, the product is not designed, authorized or warranted to
be suitable for use in life support, life-critical or safety-critical systems or
TL431_FAM
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 9 January 2019
©
Nexperia B.V. 2019. All rights reserved
18 / 19
TL431 family
Nexperia
Adjustable precision shunt regulators
Contents
1. Product profile.............................................................. 1
1.1. General description......................................................1
1.2. Features and benefits..................................................1
1.3. Applications................................................................. 2
1.4. Quick reference data................................................... 2
2. Pinning information......................................................2
3. Ordering information....................................................3
4. Marking.......................................................................... 3
5. Functional diagram.......................................................4
6. Limiting values............................................................. 5
7. Recommended operating conditions..........................6
8. Thermal characteristics............................................... 6
9. Characteristics.............................................................. 7
10. Application information........................................... 13
11. Test information........................................................ 15
12. Package outline........................................................ 15
13. Soldering................................................................... 15
14. Revision history........................................................17
15. Legal information......................................................18
©
Nexperia B.V. 2019. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 9 January 2019
TL431_FAM
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 9 January 2019
©
Nexperia B.V. 2019. All rights reserved
19 / 19