STMICROELECTRONICS TL432AIL3T

TL431
TL432
Programmable voltage reference
Datasheet − production data
Features
■
Adjustable output voltage: 2.5 to 36 V
■
Sink current capability: 1 to 100 mA
■
Typical output impedance: 0.22 Ω
■
1% and 2% voltage precision
■
Automotive temp. range - 40 °C to +125 °C
Z
TO-92
(Plastic package)
L
SOT23-3
Applications
■
Power supply
■
Industrial
■
Automotive
L
SOT23-5
Description
The TL431 and TL432 are programmable 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.
December 2012
This is information on a product in full production.
Doc ID 4467 Rev 11
C
SOT323-6
D
SO-8
(Batwing plastic micropackage)
1/21
www.st.com
21
Contents
TL431, TL432
Contents
1
Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1
4
Reference input voltage deviation over temperature range . . . . . . . . . . . . 7
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1
SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2
TO-92 ammopack and tape and reel package information . . . . . . . . . . . 13
4.3
TO-92 (bulk) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4
SOT23-3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5
SOT23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6
SOT323-6 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21
Doc ID 4467 Rev 11
TL431, TL432
1
Schematic diagrams
Schematic diagrams
Figure 1.
TO-92 pin connections (top view)
Figure 2.
SO-8 batwing pin connections (top view)
SO8
Cathode 1
8 Ref
Anode 2
7 Anode
3
6
NC 4
Figure 3.
5 NC
SOT23-5 and SOT23-3 pin connections (top view)
SOT23-5
NC
1
NC
2
Cathode
3
SOT23-3
5 Anode
Cathode 1
4 Ref
Ref
2
3 Anode
TL431
TL431
Figure 4.
SOT323-6 pin connections (top view)
Figure 5.
TL431 and TL432 block diagram
TL432
Cathode
Ref
Vref
Anode
Doc ID 4467 Rev 11
3/21
Absolute maximum ratings and operating conditions
2
TL431, TL432
Absolute maximum ratings and operating conditions
Table 1.
Absolute maximum ratings
Symbol
VKA
Parameter
Cathode to anode voltage
Value
Unit
37
V
Ik
Continuous cathode current range
-100 to +150
mA
Iref
Reference input current range
-0.05 to +10
mA
Rthja
Thermal resistance junction to ambient(1)
TO-92
SO-8 batwing
SOT23-3L
SOT23-5L
SOT323-6L
200
85
248
157
221
Rthjc
Thermal resistance junction to case (1)
SO-8 batwing
SOT23-3L
SOT23-5L
SOT323-6L
30
136
67
110
Tstg
Storage temperature range
TJ
ESD
Junction temperature
TL431IY, TL431AIY-T: HBM (human body model)
TL431-TL432: HBM (human body model)
MM: machine model (3)
CDM: charged device model (4)
(2)
°C/W
°C/W
-65 to +150
°C
150
°C
3000
2000
200
1500
V
1. Short-circuits can cause excessive heating. These values are typical.
2. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
3. 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 Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
4. 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.
Table 2.
Operating conditions
Symbol
VKA
Ik
Toper
4/21
Parameter
Value
Unit
Cathode to anode voltage
Vref to 36
V
Cathode current
1 to 100
mA
0 to +70
-40 to +105
-40 to +125
°C
Operating free-air temperature range
TL431C/AC
TL431I/AI - TL432I/AI
TL431IY/AIY
Doc ID 4467 Rev 11
TL431, TL432
Electrical characteristics
3
Electrical characteristics
Table 3.
TL431C (Tamb = 25° C unless otherwise specified)
TL431C
Symbol
Unit
Min.
Vref
Reference input voltage
VKA = Vref, Ik = 10 mA, Tamb = 25° C
Tmin ≤ Tamb ≤ Tmax
ΔVref
Reference input voltage deviation over temperature
range (1)
VKA = Vref, Ik = 10 mA, Tmin ≤ Tamb ≤ Tmax
ΔVref
-----------ΔVka
Iref
TL431AC
Parameter
Ratio of change in reference input voltage to change
in cathode to anode voltage
Ik = 10 mA - ΔVKA = 10 V to Vref
ΔVKA = 36 V to 10 V
Typ.
Max.
Min.
Typ.
Max.
2.44 2.495 2.55 2.47 2.495 2.52
2.423
2.567 2.453
2.537
mV
3
-2.7
-2
Reference input current
Ik = 10 mA, R1 = 10 kΩ, R2 = ∞
Tamb = 25° C
Tmin ≤ Tamb ≤ Tmax
17
-1.4
-1
3
-2.7
-2
1.8
4
5.2
15
mV/V
-1.4
-1
1.8
4
5.2
Reference input current deviation over temperature
range
Ik = 10 mA, R1 = 10 kΩ, R2 =∞
Tmin ≤ Tamb ≤ Tmax
0.4
1.2
0.4
1.2
Imin
Minimum cathode current for regulation
VKA = Vref
0.5
1
0.5
0.6
Ioff
Off-state cathode current
2.6
1000
2.6
1000
0.22
0.5
0.22
0.5
ΔIref
V
µA
µA
mA
nA
(2)
⏐ZKA⏐
Dynamic impedance
VKA = Vref, Δ Ik = 1 to 100 mA, f ≤ 1 kHZ
Ω
1. See definition of Section 3.1: Reference input voltage deviation over temperature range.
ΔV KA
2. The dynamic impedance is defined as |ZKA| = ---------------
ΔI k
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Electrical characteristics
Table 4.
TL431, TL432
TL431I/TL432I (Tamb = 25°C unless otherwise specified)
TL431I/TL432I
Symbol
Unit
Min.
Vref
Reference input voltage
VKA = Vref, Ik = 10 mA, Tamb = 25° C
Tmin ≤ Tamb ≤ Tmax
ΔVref
Reference input voltage deviation over temperature
range (1)
VKA = Vref, Ik =10 mA, Tmin≤ Tamb≤ Tmax
ΔVref
-----------ΔVka
Iref
ΔIref
TL431AI/TL432AI
Parameter
Ratio of change in reference input voltage to change
in cathode to anode voltage
Ik = 10 mA, ΔVKA = 10 V to Vref
ΔVKA = 36 V to 10 V
Typ.
Max.
Min.
Typ.
Max.
2.44 2.495 2.55
2.41
2.58
2.47 2.495 2.52
2.44
2.55
V
7
7
mV
-2.7
-2
Reference input current
Ik = 10 mA, R1 = 10 kΩ, R2 = ∞
Tamb = 25° C
Tmin ≤ Tamb ≤ Tmax
Reference input current deviation over temperature
range
Ik = 10 mA, R1 = 10 kΩ, R2 = ∞
Tmin ≤ Tamb ≤ Tmax
30
-1.4
-1
-2.7
-2
30
-1.4
-1
mV/V
1.8
4
6.5
1.8
4
6.5
µA
0.8
2.5
0.8
1.2
µA
Imin
Minimum cathode current for regulation
VKA = Vref
0.5
1
0.5
0.7
mA
Ioff
Off-state cathode current
2.6
1000
2.6
1000
nA
0.22
0.5
0.22
0.5
Ω
(2)
⏐ZKA⏐
Dynamic impedance
VKA = Vref, Δ Ik = 1 to 100 mA, f ≤ 1 kHZ
1. See definition of Section 3.1: Reference input voltage deviation over temperature range below.
ΔV KA
2. The dynamic impedance is defined as |ZKA| = ---------------
ΔI k
6/21
Doc ID 4467 Rev 11
TL431, TL432
Table 5.
Electrical characteristics
TL431IY (Tamb = 25°C unless otherwise specified)
TL431IY
Symbol
Unit
Min.
Vref
Reference input voltage
VKA = Vref, Ik = 10 mA
Tmin ≤ Tamb ≤ Tmax
ΔVref
Reference input voltage deviation over temperature
range (1)
VKA = Vref, Ik = 10 mA, Tmin≤ Tamb ≤ Tmax
ΔVref
-----------ΔVka
Iref
ΔIref
Ratio of change in reference input voltage to change
in cathode to anode voltage
Ik = 10 mA, ΔVKA = 10 V to Vref
Ik = 10 mA, ΔVKA = 36 V to 10 V
Ioff
Off-state cathode current
Tmin ≤ Tamb ≤ Tmax
Max.
Min.
Typ.
Max.
2.47 2.495 2.52
2.44
2.55
V
7
7
mV
-2.7
-2
Reference input current deviation over temperature
range
Ik = 10 mA, R1 = 10 kΩ, R2 = ∞, Tmin ≤ Tamb ≤
Tmax
Minimum cathode current for regulation
VKA = Vref
Typ.
2.44 2.495 2.55
2.41
2.58
Reference input current
Ik = 10 mA, R1 = 10 kΩ, R2 = ∞
Tmin ≤ Tamb ≤ Tmax
Imin
⏐ZKA⏐
TL431AIY
Parameter
Dynamic impedance (2)
VKA = Vref, Δ Ik = 1 to 100 mA, F ≤ 1 kHz
30
-1.4
-1
-2.7
-2
30
-1.4
-1
mV/V
1.8
4
6.5
1.8
4
6.5
µA
0.8
2.5
0.8
1.2
µA
0.5
1
0.5
0.6
mA
2.6
1000
3000
2.6
1000
3000
nA
0.22
0.5
0.22
0.5
Ω
1. See definition of Section 3.1: Reference input voltage deviation over temperature range below.
ΔV KA
2. The dynamic impedance is defined as |ZKA| = ---------------
ΔI k
3.1
Reference input voltage deviation over temperature range
ΔVref is defined as the difference between the maximum and minimum values obtained over
the full temperature range.
ΔVref = Vref max - Vref min
Figure 6.
Reference input voltage deviation over temperature range
Doc ID 4467 Rev 11
7/21
Electrical characteristics
Figure 7.
TL431, TL432
Test circuit for VKA = Vref
Figure 8.
Test circuit for programming mode
Input
Input
R
Output
R
IK
Output
R1
IK=10mA
VKA
IREF
R2
VKA
VREF
VREF
VKA = VREF ( 1 + R1
------- ) + R1 x IREF
R2
Figure 9.
Test circuit for Ioff
Figure 10. Test circuit for phase margin and
voltage gain
VKA=36V
10μF
10μF
Figure 11. Test circuit for response time
Output
8.25kΩ
Input
IK=10mA
15kΩ
IOFF
VREF
Figure 12. Reference voltage vs. temperature
1 mA
0 mA
Output
IK=1mA
Cathode voltage VKA (V)
2.54
VKA = VREF
IK = 10 mA
2.52
2.50
2.48
2.46
2.44
-40
-20
0
20
40
60
Temperature (°C)
8/21
Doc ID 4467 Rev 11
80
100
120
TL431, TL432
Electrical characteristics
Figure 13. Reference voltage vs. cathode
current
Figure 14. Zoom on reference voltage vs.
cathode current
Figure 15. Reference current vs. temperature
Figure 16. Off-state cathode current vs.
temperature
0.4
Off-state current IOFF (μA)
Reference current IREF (μA)
2.0
IK=10 mA
R1=10kΩ
R2= + ∝
1.5
1.0
0.5
0.0
-40
VKA = 36 V
VREF = 0 V
0.3
0.2
0.1
-20
0
20
40
60
80
100
0.0
-40
120
-20
0
20
40
60
80
100
120
Temperature (°C)
Temperature °C
Figure 17. Ratio of change in Vref to change in Figure 18. Static impedance RKA vs.
VKA vs. temperature
temperature
0.20
Static impedance RKA (Ω)
ΔVREF / ΔVKA (mV / V)
0.0
IK = 10 mA
-0.5
-1.0
VKA=VREF
0.18
0.16
0.14
-1.5
0.12
-2.0
-40
-20
0
20
40
60
80
100
120
0.10
-40
-20
0
20
40
60
80
100
120
Temperature (°C)
Temperature (°C)
Doc ID 4467 Rev 11
9/21
Electrical characteristics
TL431, TL432
Figure 19. Minimum operating current vs.
temperature
Figure 20. Gain and phase vs. frequency
Minimum cathode current IMIN (mA)
0.6
0.4
VKA = VREF
0.2
0.0
-40
-20
0
20
40
60
80
100
120
Temperature (°C)
Figure 21. Stability behavior with capacitive
loads
Figure 22. Maximum power dissipation
Figure 23. Pulse response for Ik = 1 mA
10/21
Doc ID 4467 Rev 11
TL431, TL432
4
Package mechanical data
Package mechanical data
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.
Doc ID 4467 Rev 11
11/21
Package mechanical data
4.1
TL431, TL432
SO-8 package information
Figure 24. SO-8 package mechanical drawing
Table 6.
SO-8 package mechanical data
Dimensions
Ref.
Millimeters
Min.
Typ.
A
Max.
Min.
Typ.
1.75
0.25
Max.
0.069
A1
0.10
A2
1.25
b
0.28
0.48
0.011
0.019
c
0.17
0.23
0.007
0.010
D
4.80
4.90
5.00
0.189
0.193
0.197
E
5.80
6.00
6.20
0.228
0.236
0.244
E1
3.80
3.90
4.00
0.150
0.154
0.157
e
0.004
0.010
0.049
1.27
0.050
h
0.25
0.50
0.010
0.020
L
0.40
1.27
0.016
0.050
L1
k
ccc
12/21
Inches
1.04
0°
0.040
8°
0.10
Doc ID 4467 Rev 11
0°
8°
0.004
TL431, TL432
4.2
Package mechanical data
TO-92 ammopack and tape and reel package information
Figure 25. TO-92 ammopack and tape and reel package mechanical drawing
Table 7.
TO-92 ammopack and tape and reel package mechanical data
Millimeters
Inches
Dim.
Min.
Typ.
Max.
Min.
Typ.
Max.
A1
5.0
0.197
A
5.0
0.197
T
4.0
0.157
d
0.45
0.018
I1
2.5
0.098
P
11.7
12.7
13.7
0.461
0.500
0.539
PO
12.4
12.7
13
0.488
0.500
0.512
P2
5.95
6.35
6.75
0.234
0.250
0.266
F1/F2
2.4
2.5
2.8
0.094
0.098
0.110
Δh
-1
0
1
-0.039
0
0.039
ΔP
-1
0
1
-0.039
0
0.039
W
17.5
18.0
19.0
0.689
0.709
0.748
W0
5.7
6
6.3
0.224
0.236
0.248
W1
8.5
9
9.75
0.335
0.354
0.384
W2
0.5
0.020
H
20
0.787
H0
15.5
16
H1
DO
L1
16.5
0.610
0.630
25
3.8
4.0
4.2
11
Doc ID 4467 Rev 11
0.650
0.984
0.150
0.157
0.165
0.433
13/21
Package mechanical data
4.3
TL431, TL432
TO-92 (bulk) package information
Figure 26. TO-92 bulk package mechanical drawing
0067407_H
Table 8.
TO-92 bulk package mechanical data
Millimeters
Inches
Dim.
Min.
A
Typ.
Min.
1.35
B
Typ.
Max.
0.053
4.70
C
14/21
Max.
0.185
2.54
0.100
D
4.40
0.173
E
12.70
0.500
F
3.70
0.146
a
0.5
0.019
Doc ID 4467 Rev 11
TL431, TL432
4.4
Package mechanical data
SOT23-3 package information
Figure 27. SOT23-3 package mechanical drawing
Table 9.
SOT23-3 package mechanical data
Dimensions
Millimeters
Inches
Ref.
Min.
Typ.
Max.
Min.
Typ.
Max.
A
0.89
1.12
0.035
0.044
A1
0.01
0.10
0.0004
0.004
A2
0.88
1.02
0.035
b
0.30
0.50
0.012
0.020
c
0.08
0.20
0.003
0.008
D
2.80
3.04
0.110
E
2.10
2.64
0.083
E1
1.20
1.40
0.047
0.95
2.90
1.30
0.037
0.114
0.051
0.95
0.037
e1
1.90
0.075
0.40
L1
k
0.50
0.60
0.54
0d
0.016
0.120
0.104
e
L
0.040
0.020
0.055
0.024
0.021
8d
Doc ID 4467 Rev 11
15/21
Package mechanical data
4.5
TL431, TL432
SOT23-5 package information
Figure 28. SOT23-5 package mechanical drawing
7049676_I
Table 10.
SOT23-5 package mechanical data
Dimensions
Ref.
Millimeters
Min.
A
Typ.
0.90
A1
Max.
Min.
1.45
0.035
Typ.
Max.
0.057
0.15
0.006
A2
0.90
1.30
0.035
0.051
b
0.35
0.50
0.014
0.020
c
0.09
0.20
0.004
0.008
D
2.80
3.05
0.110
0.120
E
1.50
1.75
0.059
0.069
e
16/21
Inches
0.95
0.037
H
2.60
3.00
0.102
0.118
L
0.10
0.60
0.004
0.024
θ
0 degrees
10 degrees
Doc ID 4467 Rev 11
TL431, TL432
4.6
Package mechanical data
SOT323-6 package information
Figure 29. SOT323-6 package mechanical drawing
7095021_E
Table 11.
SOT323-6 package mechanical data
Dimensions
Ref.
Millimeters
Min.
Typ.
Inches
Max.
Min.
0.031
Typ.
Max.
A
0.80
1.10
A1
0
0.10
A2
0.80
1.00
0.031
0.039
b
0.15
0.30
0.006
0.012
c
0.10
0.18
0.004
0.007
D
1.80
2.20
0.071
0.087
E
1.15
1.35
0.045
0.053
e
0.043
0.004
0.65
0.026
HE
1.80
2.40
0.071
0.094
L
0.10
0.40
0.004
0.016
Q1
0.10
0.40
0.004
0.016
Doc ID 4467 Rev 11
17/21
Ordering information
TL431, TL432
5
Ordering information
Table 12.
Order codes
Order code
TL431CD
TL431CDT
Accuracy
(%)
Temperature
range
Package
Packing
SO-8
Tube or
Tape and reel
2
TL431ACD
TL431ACDT
1
TL431CZ
TL431CZT
TL431CZ-AP
2
431C
431AC
TL431C
TO-92
TL431ACZ
TL431ACZT
TL431ACZ-AP
1
TL431CL3T
2
Marking
Bulk or
Tape or
Ammopack
0°C to +70°C
TL431AC
L19
SOT23-3
TL431ACL3T
1
TL431CL5T
2
L18
L19
SOT23-5
TL431ACL5T
1
TL431CCT
2
Tape
L18
31C
SOT323-6
TL431ACCT
1
TL431ID
TL431IDT
2
31C
431I
SO-8
TL431AID
TL431AIDT
1
TL431IZ
TL431IZT
TL431IZ-AP
2
431AI
TL431I
TO-92
TL431AIZ
TL431AIZT
TL431AIZ-AP
1
TL431IL3T
2
Tube or
tape and reel
Bulk or
Tape or
Ammopack
TL431AI
-40°C to + 105°C
L17
SOT23-3
TL431AIL3T
1
TL432IL3T
2
L16
32I
SOT23-3
TL432AIL3T
1
32AI
Tape
TL431IL5T
2
L17
SOT23-5
TL431AIL5T
1
TL431ICT
2
L16
31I
SOT323-6
TL431AICT
18/21
1
31I
Doc ID 4467 Rev 11
TL431, TL432
Table 12.
Ordering information
Order codes (continued)
Order code
Accuracy
(%)
TL431IYD (1)
TL431IYDT (1)
2
TL431AIYD (1)
TL431AIYDT (1)
1
Temperature
range
Package
Packing
-40°C to + 125°C
SO-8
(Automotive
grade level)
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 & Q 002 or equivalent.
Doc ID 4467 Rev 11
19/21
Revision history
TL431, TL432
6
Revision history
Table 13.
Document revision history
Date
Revision
01-Mar-2002
1
Initial release.
01-Nov-2005
2
PPAP references inserted in order codes table on cover page.
13-Dec-2006
3
Corrected TO-92 package information.
4
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.
5
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.
08-Jun-2007
25-Feb-2008
Changes
Changed IMIN 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.
04-Jun-2009
6
09-Jun-2009
7
Corrected minor error in package column in Table 12.
14-Mar-2011
8
Added Figure 3 on page 3, Section 4.4 on page 15 and Section 4.5 on page
16.
07-Oct-2011
9
Added new package mechanical data Table 11 on page 17 and Figure 29 on
page 17.
Updated Table 12 on page 18.
17-Nov-2011
10
Added new part number TL432, new order code Table 12 on page 18 and pin
connection for TL432 Figure 3 on page 3.
03-Dec-2012
11
Removed temperature range in title Table 3 on page 5, Table 4 on page 6 and
Table 5 on page 7.
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TL431, TL432
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