TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A AUGUST 2004 - REVISED AUGUST 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Operation From -40
C to 125
C
- 0.5% . . . B Grade
- 1% . . . A Grade
- 2% . . . Standard Grade
D
Typical Temperature Drift (TL431B)
- 6 mV (C Temp)
- 14 mV (I Temp, Q Temp)
D
Low Output Noise
D
0.2-
Typical Output Impedance
D
Sink-Current Capability . . . 1 mA to 100 mA
D
Adjustable Output Voltage . . . V
ref
to 36 V
1
2
3
4
8
7
6
5
CATHODE
ANODE
ANODE
NC
REF
ANODE
ANODE
NC
TL431, TL431A, TL431B . . . D (SOIC) PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
CATHODE
NC
NC
NC
REF
NC
ANODE
NC
TL431, TL431A, TL431B . . . P (PDIP), PS (SOP),
OR PW (TSSOP) PACKAGE
(TOP VIEW)
TL431, TL431A, TL431B . . . LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
CATHODE
ANODE
REF
NC - No internal connection
TL431, TL431A, TL431B . . . DBV (SOT23-5) PACKAGE
(TOP VIEW)
1
2
3
5
4
NC
NU
CATHODE
ANODE
REF
TL431, TL431A, TL431B . . . PK (SOT-89) PACKAGE
(TOP VIEW)
REF
ANODE
CATHODE
CATHODE
ANODE
REF
TL431 . . . KTP (PowerFLEX
E
/TO-252) PACKAGE
(TOP VIEW)
ANODE
NU - Make no external connection
NC - No internal connection
TL432, TL432A, TL432B . . . DBV (SOT23-5) PACKAGE
(TOP VIEW)
1
2
3
5
4
NC
ANODE
NC
REF
CATHODE
NC - No internal connection
TL431, TL431A, TL431B . . . DBZ (SOT23-3) PACKAGE
(TOP VIEW)
TL432, TL432A, TL432B . . . DBZ (SOT23-3) PACKAGE
(TOP VIEW)
NC - No internal connection
1
2
3
REF
CATHODE
ANODE
1
2
3
CATHODE
REF
ANODE
TL431A, TL431B . . . DCK (SC-70) PACKAGE
(TOP VIEW)
1
2
3
6
5
4
CATHODE
NC
REF
ANODE
NC
NC
NC - No internal connection
Copyright
2004, Texas Instruments Incorporated
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.
PowerFLEX is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A AUGUST 2004 - REVISED AUGUST 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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 V
ref
(approximately 2.5 V) and 36 V, with two external resistors (see Figure 17). These devices have
a typical output impedance of 0.2
. 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 and DBZ 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.
TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A AUGUST 2004 - REVISED AUGUST 2004
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
V
ref
TOLERANCE (25
C) = 2%
TL431, TL432 ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (P)
Tube of 50
TL431CP
TL431CP
SOIC (D)
Tube of 75
TL431CD
TL431C
SOIC (D)
Reel of 2500
TL431CDR
TL431C
SOP (PS)
Reel of 2000
TL431CPSR
T431
Reel of 3000
TL431CDBVR
T3C_
SOT-23-5 (DBV)
Reel of 250
TL431CDBVT
T3C_
SOT-23-5 (DBV)
Reel of 3000
TL432CDBVR
TAB_
Reel of 250
TL432CDBVT
TAB_
0
C to 70
C
Reel of 3000
TL431CDBZR
TAC_
0
C to 70
C
SOT-23-3 (DBZ)
Reel of 250
TL431CDBZT
TAC_
SOT-23-3 (DBZ)
Reel of 3000
TL432CDBZR
TAB_
Reel of 250
TL432CDBZT
TAB_
SOT-89 (PK)
Reel of 1000
TL431CPK
43
Bulk of 1000
TL431CLP
TO-226/TO-92 (LP)
Ammo of 2000
TL431CLPM
TL431C
TO-226/TO-92 (LP)
Reel of 2000
TL431CLPR
TL431C
TSSOP (PW)
Tube of 150
TL431CPW
T431
TSSOP (PW)
Reel of 2000
TL431CPWR
T431
PDIP (P)
Tube of 50
TL431IP
TL431IP
SOIC (D)
Tube of 75
TL431ID
TL431I
SOIC (D)
Reel of 2500
TL431IDR
TL431I
Reel of 3000
TL431IDBVR
T3I_
SOT-23-5 (DBV)
Reel of 250
TL431IDBVT
T3I_
SOT-23-5 (DBV)
Reel of 3000
TL432IDBVR
T4A_
-40
C to 85
C
Reel of 250
TL432IDBVT
T4A_
-40
C to 85
C
Reel of 3000
TL431IDBZR
TAI_
SOT-23-3 (DBZ)
Reel of 250
TL431IDBZT
TAI_
SOT-23-3 (DBZ)
Reel of 3000
TL432IDBZR
T4A_
Reel of 250
TL432IDBZT
T4A_
SOT-89 (PK)
Reel of 1000
TL431IPK
3I
TO-226/TO-92 (LP)
Bulk of 1000
TL431ILP
TL431I
TO-226/TO-92 (LP)
Reel of 2000
TL431ILPR
TL431I
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
DBV/DBZ: The actual top-side marking has one additional character that designates the assembly/test site.
TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A AUGUST 2004 - REVISED AUGUST 2004
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
V
ref
TOLERANCE (25
C) = 2%
TL431, TL432 ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
Reel of 3000
TL431QDBVR
TBD
SOT-23-5 (DBV)
Reel of 250
TL431QDBVT
TBD
SOT-23-5 (DBV)
Reel of 3000
TL432QDBVR
TBD
-40
C to 125
C
Reel of 250
TL432QDBVT
TBD
-40
C to 125
C
Reel of 3000
TL431QDBZR
TBD
SOT-23-3 (DBZ)
Reel of 250
TL431QDBZT
TBD
SOT-23-3 (DBZ)
Reel of 3000
TL432QDBZR
TBD
Reel of 250
TL432QDBZT
TBD
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
DBV/DBZ: The actual top-side marking has one additional character that designates the assembly/test site.
V
ref
TOLERANCE (25
C) = 1%
TL431A, TL432A ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (P)
Tube of 50
TL431ACP
TL431ACP
SC-70 (DCK)
Reel of 3000
TL431ACDCKR
TBD
SC-70 (DCK)
Reel of 250
TL431ACDCKT
TBD
SOIC (D)
Tube of 75
TL431ACD
431AC
SOIC (D)
Reel of 2500
TL431ACDR
431AC
SOP (PS)
Reel of 2000
TL431ACPSR
T431A
Reel of 3000
TL431ACDBVR
TAC_
SOT-23-5 (DBV)
Reel of 250
TL431ACDBVT
TAC_
SOT-23-5 (DBV)
Reel of 3000
TL432ACDBVR
TAB_
0
C to 70
C
Reel of 250
TL432ACDBVT
TAB_
0
C to 70
C
Reel of 3000
TL431ACDBZR
TAC_
SOT-23-3 (DBZ)
Reel of 250
TL431ACDBZT
TAC_
SOT-23-3 (DBZ)
Reel of 3000
TL432ACDBZR
TAB_
Reel of 250
TL432ACDBZT
TAB_
SOT-89 (PK)
Reel of 1000
TL431ACPK
4A
Bulk of 1000
TL431ACLP
TL431AC
TO-226/TO-92 (LP)
Ammo of 2000
TL431ACLPM
TL431AC
TO-226/TO-92 (LP)
Reel of 2000
TL431ACLPR
TL431AC
TSSOP (PW)
Tube of 150
TL431ACPW
T431A
TSSOP (PW)
Reel of 2000
TL431ACPWR
T431A
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
DBV/DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A AUGUST 2004 - REVISED AUGUST 2004
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
V
ref
TOLERANCE (25
C) = 1%
TL431A, TL432A ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (P)
Tube of 50
TL431AIP
TL431AIP
SC-70 (DCK)
Reel of 3000
TL431AIDCKR
TBD
SC-70 (DCK)
Reel of 250
TL431AIDCKT
TBD
SOIC (D)
Tube of 75
TL431AID
431AI
SOIC (D)
Reel of 2500
TL431AIDR
431AI
Reel of 3000
TL431AIDBVR
TAI_
SOT-23-5 (DBV)
Reel of 250
TL431AIDBVT
TAI_
SOT-23-5 (DBV)
Reel of 3000
TL432AIDBVR
T4A_
-40
C to 85
C
Reel of 250
TL432AIDBVT
T4A_
-40 C to 85 C
Reel of 3000
TL431AIDBZR
TAI_
SOT-23-3 (DBZ)
Reel of 250
TL431AIDBZT
TAI_
SOT-23-3 (DBZ)
Reel of 3000
TL432AIDBZR
T4A_
Reel of 250
TL432AIDBZT
T4A_
SOT-89 (PK)
Reel of 1000
TL431AIPK
4B
Bulk of 1000
TL431AILP
TO-226/TO-92 (LP)
Ammo of 2000
TL431AILPM
TL431AI
TO-226/TO-92 (LP)
Reel of 2000
TL431AILPR
TL431AI
Reel of 3000
TL431AQDBVR
TBD
SOT-23-5 (DBV)
Reel of 250
TL431AQDBVR
TBD
SOT-23-5 (DBV)
Reel of 3000
TL432AQDBVR
TBD
-40
C to 125
C
Reel of 250
TL432AQDBVT
TBD
-40
C to 125
C
Reel of 3000
TL431AQDBZR
TBD
SOT-23-3 (DBZ)
Reel of 250
TL431AQDBZT
TBD
SOT-23-3 (DBZ)
Reel of 3000
TL432AQDBZR
TBD
Reel of 250
TL432AQDBZT
TBD
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
DBV/DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
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