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TL431, TL431A, TL431B
TL432, TL432A, TL432B
www.ti.com
SLVS543M – AUGUST 2004 – REVISED JULY 2012
PRECISION PROGRAMMABLE REFERENCE
Check for Samples:
TL431, TL431A, TL431B, TL432, TL432A, TL432B
1
FEATURES
Operation From
−40°C
to 125°C
Reference Voltage Tolerance at 25°C
– 0.5% . . . B Grade
– 1%. . . A Grade
– 2% . . . Standard Grade
•
Typical Temperature Drift (TL431B)
– 6 mV (C Temp)
– 14 mV (I Temp, Q Temp)
Low Output Noise
0.2-Ω Typical Output Impedance
Sink-Current Capability . . . 1 mA to 100 mA
Adjustable Output Voltage . . . Vref to 36 V
TL431, TL431A, TL431B . . . P (PDIP), PS (SOP),
OR PW (TSSOP) PACKAGE
(TOP VIEW)
•
•
•
•
•
•
TL431, TL431A, TL431B . . . D (SOIC) PACKAGE
(TOP VIEW)
CATHODE
ANODE
ANODE
NC
1
2
3
4
8
7
6
5
REF
ANODE
ANODE
NC
CATHODE
NC
NC
NC
1
2
3
4
8
7
6
5
REF
NC
ANODE
NC
NC − No internal connection
NC − No internal connection
TL431, TL431A, TL431B . . . PK (SOT-89) PACKAGE
(TOP VIEW)
TL432, TL432A, TL432B . . . PK (SOT-89) PACKAGE
(TOP VIEW)
CATHODE
ANODE
ANODE
REF
ANODE
REF
ANODE
CATHODE
TL431, TL431A, TL431B . . . DBV (SOT-23-5) PACKAGE
(TOP VIEW)
TL432, TL432A, TL432B . . . DBV (SOT-23-5) PACKAGE
(TOP VIEW)
NC
†
1
2
3
5
4
ANODE
REF
NC
ANODE
NC
1
2
3
5
4
REF
CATHODE
CATHODE
NC − No internal connection
†
Pin 2 is attached to Substrate and must be
connected to ANODE or left open.
NC − No internal connection
TL431, TL431A, TL431B . . . DBZ (SOT-23-3) PACKAGE
(TOP VIEW)
TL432, TL432A, TL432B . . . DBZ (SOT-23-3) PACKAGE
(TOP VIEW)
CATHODE
REF
1
3
2
REF
ANODE
CATHODE
1
3
2
ANODE
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2012, Texas Instruments Incorporated
TL431, TL431A, TL431B
TL432, TL432A, TL432B
SLVS543M – AUGUST 2004 – REVISED JULY 2012
www.ti.com
TL431, TL431A, TL431B . . . LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
TL431A, TL431B . . . DCK (SC-70) PACKAGE
(TOP VIEW)
CATHODE
ANODE
REF
CATHODE
NC
REF
1
2
3
6
5
4
ANODE
NC
NC
NC − No internal connection
TL431 . . . KTP (PowerFLEX /TO-252) PACKAGE
(TOP VIEW)
ANODE
CATHODE
ANODE
REF
DESCRIPTION/ORDERING INFORMATION
The TL431 and TL432 are three-terminal adjustable shunt regulators, with specified thermal stability over
applicable automotive, commercial, and military 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 17). 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, such as onboard regulation,
adjustable power supplies, and switching power supplies. The TL432 has exactly the same functionality and
electrical specifications as the TL431, but has different pinouts for the DBV, DBZ, and PK packages.
Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25°C) of 0.5%, 1%, and
2%, for the B, A, and standard grade, respectively. In addition, low output drift vs temperature ensures good
stability over the entire temperature range.
The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized
for operation from –40°C to 85°C, and the TL43xxQ devices are characterized for operation from –40°C to
125°C.
2
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Copyright © 2004–2012, Texas Instruments Incorporated
Product Folder Link(s):
TL431 TL431A TL431B TL432 TL432A TL432B
TL431, TL431A, TL431B
TL432, TL432A, TL432B
www.ti.com
SLVS543M – AUGUST 2004 – REVISED JULY 2012
V
ref
TOLERANCE (25°C) = 2%
TL431, TL432 ORDERING INFORMATION
(1)
T
A
PDIP (P)
SOIC (D)
SOP (PS)
PACKAGE
(2)
Tube of 50
Tube of 75
Reel of 2500
Reel of 2000
Reel of 3000
SOT-23-5 (DBV)
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
0°C to 70°C
SOT-23-3 (DBZ)
Reel of 250
Reel of 3000
Reel of 250
SOT-89 (PK)
Reel of 1000
Bulk of 1000, straight lead
TO-226/TO-92 (LP)
Ammo of 2000, formed lead
Reel of 2000, formed lead
TSSOP (PW)
PDIP (P)
SOIC (D)
Tube of 150
Reel of 2000
Tube of 50
Tube of 75
Reel of 2500
Reel of 3000
SOT-23-5 (DBV)
Reel of 250
Reel of 3000
Reel of 250
-40°C to 85°C
SOT-23-3 (DBZ)
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
SOT-89 (PK)
Reel of 1000
Bulk of 1000, straight lead
TO-226/TO-92 (LP)
Ammo of 2000, formed lead
Reel of 2000, formed lead
(1)
(2)
(3)
ORDERABLE PART NUMBER
TL431CP
TL431CD
TL431CDR
TL431CPSR
TL431CDBVR
TL431CDBVT
TL432CDBVR
TL432CDBVT
TL431CDBZR
TL431CDBZT
TL432CDBZR
TL432CDBZT
TL431CPK
TL432CPK
TL431CLP
TL431CLPM
TL431CLPR
TL431CPW
TL431CPWR
TL431IP
TL431ID
TL431IDR
TL431IDBVR
TL431IDBVT
TL432IDBVR
TL432IDBVT
TL431IDBZR
TL431IDBZT
TL432IDBZR
TL432IDBZT
TL431IPK
TL432IPK
TL431ILP
TL431ILPM
TL431ILPR
TL431I
T431
TL431IP
TL431I
T3I_
T4I_
T3I_
T4I_
3I
2B
TL431C
TOP-SIDE
MARKING
(3)
TL431CP
TL431C
T431
T3C_
T4C_
T3C_
T4C_
43
2A
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at
www.ti.com.
Package drawings, thermal data, and symbolization are available at
www.ti.com/packaging.
DBV/DBZ/DCK: The actual top-side marking has one additional character that designates the wafer fab/assembly site.
Copyright © 2004–2012, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Link(s):
TL431 TL431A TL431B TL432 TL432A TL432B
TL431, TL431A, TL431B
TL432, TL432A, TL432B
SLVS543M – AUGUST 2004 – REVISED JULY 2012
www.ti.com
V
ref
TOLERANCE (25°C) = 2%
TL431, TL432 ORDERING INFORMATION
(1)
(continued)
T
A
PACKAGE
(2)
Reel of 3000
SOT-23-5 (DBV)
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
-40°C to 125°C
SOT-23-3 (DBZ)
Reel of 250
Reel of 3000
Reel of 250
SOT-89 (PK)
SC-70 (DCK)
Reel of 1000
Reel of 1000
Reel of 250
ORDERABLE PART NUMBER
TL431QDBVR
TL431QDBVT
TL432QDBVR
TL432QDBVT
TL431QDBZR
TL431QDBZT
TL432QDBZR
TL432QDBZT
TL431QPK
TL432QPK
TL431QDCKR
TL431QDCKT
TOP-SIDE
MARKING
(3)
T3Q_
T4Q_
T3Q_
T4Q_
3Q
2C
T6_
4
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Copyright © 2004–2012, Texas Instruments Incorporated
Product Folder Link(s):
TL431 TL431A TL431B TL432 TL432A TL432B
