TLV431: Low Voltage Precision Adjustable Shunt Regulator

The TLV431 series of parts are precision low voltage shunt regulators that are programmable over a wide voltage range of 1.24V to 16V. The TLV431A series features a guaranteed reference accuracy of 1.0% at 25 °C and 2.0% over the entire industrial temperature range of -40 °C to 85 °C. For TLV431B series, the accuracy is 0.5% and 1.0%, respectively. For the TLV431C series, the accuracy is 0.2% and 0.5%, respectively. These devices exhibit a sharp low current turn-on characteristic with a low dynamic impedance of 0.20 W over an operating current range of 100mA to 20mA. This combination of features makes this series an excellent replacement for zener diodes in numerous applications circuits that require a precise refrence voltage. When combined with an optocoupler, the TLV431 can be used as an error amplifier for controlling the feedback loop in isolated low output voltage (3.0V to 3.3V) switching power supplies. These devices are available in economical TO-92 and micro size TSOP-5 and SOT23-3 packages.

Features
  • Voltage Reference Tolerance +/-1.0%
  • Sharp Low Current Turn-On Characteristic
  • Low Dynamic Output Impedance of 0.20 W from 100 mA to 20 mA
  • Programmable Output Voltage Range of 1.24 V to 16 V
  • Micro Miniature TSOP-5 and TO-92 Packages
  • Pb-Free Package is Available
  • A = 1.0% tolerance Vref
  • B = 0.5% tolerance Vref
  • C = 0.2% tolerance Vref
Applications
  • Low Output Voltage (3.0 V to 3.3 V) Switching Power Supply Error Amplifier
  • Adjustable Voltage or Current Linear and Switching Power Supplies
  • Voltage Monitoring
  • Current Source and Sink Circuits
  • Analog and Digital Circuits Requiring Precision References
  • Low Voltage Zener Diode Replacements
End Products
  • Power Supplies
  • Smart Phone Charger / Adapters
Application Notes (2)
Document TitleDocument ID/SizeRevisionRevision Date
Isolated Precision Regulation of a Single 1.8 Volt Output from a Universal Line InputAND8031/D (120.0kB)1
Precision Sub-One Volt 1.7 Ampere Output LDOAND8028/D (38.0kB)0
Package Drawings (3)
Document TitleDocument ID/SizeRevision
SOT-23318-08 (33.4kB)AR
TO-92 (TO-226) 5.33mm Body Height29-11 (61.7kB)A
TSOP-5483 (32.5kB)M
Simulation Models (4)
Document TitleDocument ID/SizeRevisionRevision Date
LIB Model for TLV431A(IsSpice)TLV431A.LIB (1.0kB)0
LIB model for TLV431A (Orcad)LIB MODEL FOR TLV431A (ORCAD) (1.0kB)0
OLB Model for TLV431A (OrCad)OLB MODEL FOR TLV431A (ORCAD) (6.0kB)0
SYM Model for TLV431A(IsSpice)TLV431A.SYM (0.0kB)0
Evaluation Board Documents (5)
Document TitleDocument ID/SizeRevisionRevision Date
A5191HRTNGEVB Bill of Materials ROHS CompliantA5191HRTNGEVB_BOM_ROHS.PDF (43kB)4
A5191HRTNGEVB Evaluation Board User's ManualEVBUM2130/D (837kB)5Jul, 2016
A5191HRTNGEVB Gerber Layout Files (Zip Format)A5191HRTNGEVB_GERBER.ZIP (70.0kB)0
A5191HRTNGEVB SchematicA5191HRTNGEVB_SCHEMATIC.PDF (23kB)1
A5191HRTNGEVB Test ProcedureA5191HRTNGEVB_TEST_PROCEDURE.PDF (326kB)3
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Low Voltage Precision Adjustable Shunt RegulatorTLV431A/D (160kB)22Oct, 2016
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
A5191HRTNGEVBActivePb-freeHart Modem QFN Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCV431ASNT1GActiveAEC Qualified PPAP Capable Pb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.2347
NCV431BSNT1GActiveAEC Qualified PPAP Capable Pb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.2347
SCV431ASN1T1GObsoleteAEC Qualified PPAP Capable Pb-free Halide freeSOT-23-3318-081Tape and Reel3000
SCV431BSN1T1GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.3291
TLV431ALPGActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.1733
TLV431ALPRAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.128
TLV431ALPREGActivePb-free Halide freeTO-9229-11NATape and Reel2000Contact BDTIC
TLV431ALPRMGActivePb-free Halide freeTO-9229-11NAFan-Fold2000Contact BDTIC
TLV431ALPRPGActivePb-free Halide freeTO-9229-11NAFan-Fold2000Contact BDTIC
TLV431ASN1T1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.2133
TLV431ASNT1GActivePb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.2133
TLV431BLPGActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.152
TLV431BLPRAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.152
TLV431BLPREGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.152
TLV431BLPRMGActivePb-free Halide freeTO-9229-11NAFan-Fold2000Contact BDTIC
TLV431BLPRPGActivePb-free Halide freeTO-9229-11NAFan-Fold2000$0.152
TLV431BSN1T1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.2133
TLV431BSNT1GActivePb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.1333
TLV431CSN1T1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.24
Specifications
ProductTypeV(BR) Typ (V)Tolerance (%)IQ Typ (mA)IR Min (mA)VF Max (V)TA Min (°C)TA Max (°C)
NCV431ASNT1GAdjustable2.49510.5136-40125
NCV431BSNT1GAdjustable2.4950.40.5136-40125
SCV431BSN1T1GAdjustable1.240.50.0550.01516-40125
TLV431ALPGAdjustable1.2410.0550.01516-4085
TLV431ALPRAGAdjustable1.2410.0550.01516-4085
TLV431ALPREGAdjustable1.2410.0550.01516-4085
TLV431ALPRMGAdjustable1.2410.0550.01516-4085
TLV431ALPRPGAdjustable1.2410.0550.01516-4085
TLV431ASN1T1GAdjustable1.2410.0550.01516-4085
TLV431ASNT1GAdjustable1.2410.0550.01516-4085
TLV431BLPGAdjustable1.240.50.0550.01516-4085
TLV431BLPRAGAdjustable1.240.50.0550.01516-4085
TLV431BLPREGAdjustable1.240.50.0550.01516-4085
TLV431BLPRMGAdjustable1.240.50.0550.01516-4085
TLV431BLPRPGAdjustable1.240.50.0550.01516-4085
TLV431BSN1T1GAdjustable1.240.50.0550.01516-4085
TLV431BSNT1GAdjustable1.240.50.0550.01516-4085
TLV431CSN1T1GAdjustable1.240.20.0550.01516-4085
Low Voltage Precision Adjustable Shunt Regulator (160kB) TLV431
Isolated Precision Regulation of a Single 1.8 Volt Output from a Universal Line Input 1N4005
Precision Sub-One Volt 1.7 Ampere Output LDO MBT35200
LIB Model for TLV431A(IsSpice) TLV431
LIB model for TLV431A (Orcad) TLV431
OLB Model for TLV431A (OrCad) TLV431
SYM Model for TLV431A(IsSpice) TLV431
A5191HRTNGEVB BOM ROHS A5191HRTNGEVB
EVBUM2130/D - 837 KB A5191HRTNGEVB
A5191HRTNGEVB GERBER A5191HRTNGEVB
A5191HRTNGEVB SCHEMATIC A5191HRTNGEVB
A5191HRTNGEVB TEST PROCEDURE A5191HRTNGEVB
TO-92 (TO-226) 5.33mm Body Height NCV33064
TSOP-5 NUP4004M5
SOT-23 CM1214A
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