M/ 431CCM LM431BCM/ 431BCM LM431ACM/ LM431ACM LM431CCMX/ 431CCM LM431BCMX/ 431BCM LM431ACMX/ LM431ACM LM431CIM/ 431CIM LM431BIM/ 431BIM LM431AIM/ LM431AIM LM431CIMX/ 431CIM LM431BIMX/ 431BIM LM431AIMX/ LM431AIM LM431CCM3/ N1B LM431BCM3/ N1D LM431ACM3/ N1F LM431CCM3X/ N1B LM431BCM3X/ N1D LM431ACM3X/ N1F LM431CIM3 N1A LM431BIM3 N1C LM431AIM3 N1E LM431CIM3X N1A LM431BIM3X N1C LM431AIM3X N1E Transport Media NSC Drawing Rails Z03A Rails 0C to +70C Tape & Reel M08A Rails -40C to +85C Tape &Reel Rails 0C to +70C Tape & Reel MF03A Rails -40C to +85C Tape &Reel Symbol and Functional Diagrams 1005599 1005555 www.national.com 2 LM431 DC Test Circuits 1005504 1005505 Note: VZ = VREF (1 + R1/R2) + IREF* R1 FIGURE 1. Test Circuit for VZ = VREF FIGURE 2. Test Circuit for VZ > VREF 1005506 FIGURE 3. Test Circuit for Off-State Current 3 www.national.com LM431 Operating Conditions Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales

no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 BIM LM431CCM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 CCM LM431CCM3/NOPB ACTIVE SOT-23 DBZ 3 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 N1B LM431CCM3X NRND SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 85 N1B LM431CCM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 N1B LM431CCZ/NOPB ACTIVE TO-92 LP 3 1800 Green (RoHS & no Sb/Br) SN | CU SN N / A for Pkg Type -40 to 85 LM431 CCZ Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (C) Device Marking (4/5) LM431CIM NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 431 CIM LM431CIM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 CIM LM431CIM3 NRND SOT-23 DBZ 3 1000 TBD Call TI Call TI -40 to 85 N1A

eel LM431AIBP LM431AIBPX (Note 1) -40C to +85C Note 1: The micro SMD package marking is a 1 digit manufacturing Date Code only micro SMD Top View Marking Example 01005556 www.national.com Z03A 0C to +70C LM431BIM3X LM431AIM3X N1C N1E micro SMD Rails Rails LM431CCM3X/ LM431BCM3X/ LM431ACM3X/ N1B N1D N1F LM431CIM3X N1A NSC Drawing 2% LM431CCZ/ LM431CCZ LM431CIM3 N1A Transport Media 2 250 Units Tape and Reel 3k Units Tape and Reel BPA04AFB LM431 Symbol and Functional Diagrams 01005599 01005555 DC Test Circuits 01005504 FIGURE 1. Test Circuit for VZ = VREF 01005505 Note: VZ = VREF (1 + R1/R2) + IREF * R1 FIGURE 2. Test Circuit for VZ > VREF 01005506 Test Circuit for Off-State Current 3 www.national.com LM431 Absolute Maximum Ratings (Note 2) Reference Voltage If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reference Input Current 10 mA Internal Power Dissipation (Notes 3, 4) TO-92 Package S

M/ 431CCM LM431BCM/ 431BCM LM431ACM/ LM431ACM LM431CCMX/ 431CCM LM431BCMX/ 431BCM LM431ACMX/ LM431ACM LM431CIM/ 431CIM LM431BIM/ 431BIM LM431AIM/ LM431AIM LM431CIMX/ 431CIM LM431BIMX/ 431BIM LM431AIMX/ LM431AIM LM431CCM3/ N1B LM431BCM3/ N1D LM431ACM3/ N1F LM431CCM3X/ N1B LM431BCM3X/ N1D LM431ACM3X/ N1F LM431CIM3 N1A LM431BIM3 N1C LM431AIM3 N1E LM431CIM3X N1A LM431BIM3X N1C LM431AIM3X N1E Transport Media NSC Drawing Rails Z03A Rails 0C to +70C Tape & Reel M08A Rails -40C to +85C Tape &Reel Rails 0C to +70C Tape & Reel MF03A Rails -40C to +85C Tape &Reel Symbol and Functional Diagrams 1005599 1005555 www.national.com 2 LM431 DC Test Circuits 1005504 1005505 Note: VZ = VREF (1 + R1/R2) + IREF* R1 FIGURE 1. Test Circuit for VZ = VREF FIGURE 2. Test Circuit for VZ > VREF 1005506 FIGURE 3. Test Circuit for Off-State Current 3 www.national.com LM431 Operating Conditions Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales

S & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 BIM LM431CCM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 431 CCM LM431CCM3/NOPB ACTIVE SOT-23 DBZ 3 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 N1B LM431CCM3X NRND SOT-23 DBZ 3 3000 TBD Call TI Call TI 0 to 70 N1B LM431CCM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 N1B LM431CCZ/NOPB ACTIVE TO-92 LP 3 1800 Green (RoHS & no Sb/Br) CU SN N / A for Pkg Type 0 to 70 LM431 CCZ LM431CIM NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 431 CIM LM431CIM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 CIM LM431CIM3 NRND SOT-23 DBZ 3 1000 TBD Call TI Call TI -40 to 85 N1A LM431CIM3/NOPB ACTIVE SOT-23 DBZ 3 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 N1A Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2017 Orderable Device Status (1) Package Type Package Pins Package Dra

S & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 BIM LM431CCM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 431 CCM LM431CCM3/NOPB ACTIVE SOT-23 DBZ 3 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 N1B LM431CCM3X NRND SOT-23 DBZ 3 3000 TBD Call TI Call TI 0 to 70 N1B LM431CCM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 N1B LM431CCZ/NOPB ACTIVE TO-92 LP 3 1800 Green (RoHS & no Sb/Br) CU SN N / A for Pkg Type 0 to 70 LM431 CCZ LM431CIM NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 431 CIM LM431CIM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 CIM LM431CIM3 NRND SOT-23 DBZ 3 1000 TBD Call TI Call TI -40 to 85 N1A LM431CIM3/NOPB ACTIVE SOT-23 DBZ 3 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 N1A Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2017 Orderable Device Status (1) Package Type Package Pins Package Dra

4860 LM4861 LM4871 LM4890 LM4891 LM4894 LM4895 LM556 LM556 LM556 LM556 LM556 LM723 LM723 LM723 LM723 LM723 LM74 LM74 LM74 LM74 LM741 LM741 LM741 LM741 LM741 LM747 LM747 LM431ACMX LM431ACZ LM431AIM LM431AIM3 LM431AIM3X LM431AIMX LM431AIZ LM431CCM LM431CCM3 LM431CCM3X LM431CCMX LM431CCZ LM431CIM LM431CIM3 LM431CIM3X LM431CIMX LM431CIZ LM4665ITL LM4667ITL LM4860M LM4861M LM4871LD LM4890LD LM4891LD LM4894LD LM4895LD LM556CJ LM556CM LM556CMX LM556CN LM556J LM723CJ LM723CM LM723CMX LM723CN LM723J LM74CIM-3 LM74CIM-5 LM74CIMX-3 LM74CIMX-5 LM741CJ LM741CM LM741CMX LM741CN LM741J LM747CJ LM747CN Discontinued 04/04/1995 Discontinued 04/04/1995 Discontinued 03/10/1998 0 to 70 0 to 70 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 0 to 70 0 to 70 0 to 70 0 to 70 0 to 70 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -20 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 0 to 70 0 to 70 0 to 70 0 to 70 0 to 70 0 to 70 0 to 70 0 to 70 0 to 70 -55 to 125 -55 to 150 -55 t

Z LM431AIZX LM431AIZXA LM431BCM LM431BCM LM431BCM3 LM431BCM3X LM431BCMX LM431BCMX LM431BCN LM431BCZ LM431BCZ LM431BCZX LM431BCZXA LM431BIM LM431BIM LM431BIM3 LM431BIM3X LM431BIMX LM431BIMX LM431BIZ LM431BIZ LM431BIZX LM431BIZXA LM431CCM LM431CCM LM431CCM3 LM431CCM3X LM431CCMX LM431CCMX LM431CCZ LM431CCZ LM431CCZX LM431CCZXA LM431CIM LM431CIM LM431CIM3 LM431CIM3X LM431CIMX LM431CIMX LM431CIZ LM431CIZ LM431CIZX LM431CIZXA LM431SACMFX LM431SACMLX LM431SBCMFX LM431SBCMLX LM431SCCMFX LM431SCCMLX LM555CM LM555CM LM555CMX LM555CMX LM555CN LM555CN LM556CJ LM556CM LM556CM LM556CMX LM556CMX LM556CN LM556CN LM723CD Competitor ST Microelectronics (STM) ST Microelectronics (STM) National Semiconductor (NSC) National Semiconductor (NSC) National Semiconductor (NSC) National Semiconductor (NSC) ST Microelectronics (STM) National Semiconductor (NSC) ST Microelectronics (STM) National Semiconductor (NSC) National Semiconductor (NSC) Fairchild Semiconductor National Semiconductor (NSC) Fairchild Semiconductor Nati

3 LM723 LM723 LM723 LM7301 LM74 LM74 LM741 LM741 OPN LM431ACMX LM431ACZ LM431AIM LM431AIM3 LM431AIM3X LM431AIMX LM431AIZ LM431BCM LM431BCM3 LM431BCM3X LM431BCMX LM431BCZ LM431BIM LM431BIM3 LM431BIM3X LM431BIMX LM431BIZ LM431BCZ LM431BIZ LM431CCM LM431CCM3 LM431CCM3X LM431CCMX LM431CCZ LM431CIM LM431CIM3 LM431CIM3X LM431CIMX LM431CIZ LM431CCZ LM431CIZ LM4665ITL LM4667ITL LM4860M LM4861M LM4871LD LM4890LD LM4891LD LM4894LD LM4895LD LM555CM LM555CMX LM555CN LM556CJ LM556CM LM556CMX LM556CN LM556J-MIL LM556J-MIL LM556J-MIL LM556J-MIL LM556J-MIL LM556J-MIL LM556J LM607CN LM723CN LM723CJ LM723CM LM723CMX LM723J Av, CMMR, GBW, PSRR, Vs differ LM7301IM5 LM74CIM-3 LM74CIM-5 LM741CN LM741J TI Texas Instruments Orderable Part Number Comments Discontinued 10/13/1996 Discontinued 04/04/1995 Discontinued 04/04/1995 Discontinued 07/15/1995 Discontinued 07/15/1995 Av, CMMR, GBW, PSRR, Vs differ Discontinued 04/04/1995 14 8 14 14 14 14 14 Industry Package SOIC TO-92 SOIC SOT-23 SOT-23 SOIC TO-92 SOIC SOT-23 SOT-2

box [logo]2T of LM431 1800 CIZ Full production N/A N/A Samples LM431ACM3X SOT-23 3 MSL Full production N/A N/A LM431AIM3X SOT-23 3 MSL Full production N/A N/A LM431BCM3X SOT-23 3 MSL Full production N/A N/A LM431BIM3X SOT-23 3 MSL Full production N/A N/A LM431CCM3X SOT-23 3 MSL Full production N/A N/A LM431CIM3X SOT-23 3 MSL Full production N/A N/A LM431ACZ TO 92 3 MSL Full production N/A N/A LM431AIZ TO 92 3 MSL Full production N/A N/A LM431BCZ TO 92 3 MSL Full production N/A N/A LM431BIZ TO 92 3 MSL Full production N/A N/A LM431CCZ TO 92 3 MSL Full production LM431CIZ TO 92 3 LM431AC MDC Die Buy Now Buy Now Buy Now Buy Now tray of N/A General Description The LM431 is a 3-terminal adjustable shunt regulator with guaranteed temperature stability over the entire temperature range of operation. It is now available in a chip sized package (4-Bump micro SMD) using National's micro SMD package technology. The output voltage may be set at any level greater than 2.5V (VREF) up to 36V merely by selectin

P431 TL431ASA AP431SA TL431ASA AP431SA N/A AP431 N/A AP431V N/A AP431 TL431ASA AP431SA AP431SA N/A TL431ASA AP431SA N/A AP431 AP431V N/A LM431BIM LM431BIM3 LM431BIM3N1C LM431BIM3XN1C LM431BIMX LM431BIZ LM431CCM LM431CCM LM431CCM3 LM431CCM3N1A LM431CCM3N1B LM431CCM3X LM431CCM3XN1B LM431CCMX LM431CCZ LM431CIM LM431CIM LM431CIM3 LM431CIM3N1A LM431CIM3X LM431CIM3XN1A LM431CIMX LM431CIZ LM431SACMF LM431SACML LM431SBCMF LM431SBCML LM431SCCMF LM431SCCML LM78L05 AP78L05 LM78L05ABZX LM78L05ABZXA LM78L05ACM LM78L05ACMX LM78L05ACZ LM78L05ACZX LM78L05ACZXA LM78L12 AP78L12 LM78L12ACM LM78L12ACMX LM78L12ACZ LMV321 APX321 LMV321ILT LMV321RILT LMV324 APX324 LMV324 N/A LMV324AM14X LMV324AMTC14X LMV324ID LMV324IDR LMV324IPT LMV324IPWR LMV324IYPT LMV324MT LMV324MTX LMV324QD LMV324QDR LMV324QPW LMV324QPWR LMV324SID LMV324SIDR LMV324SIPWR LMV339 APX339 LMV339ID LMV339IDR LMV339IPW LMV339IPWR LMV339MT LMV339MTX LMV358 APX358 LMV358 N/A LMV358AM8X LMV358AMU8X N/A AP431 TL431ASA TL431ASA TL431ASA N/A AP431

CM3 SOT-23 3 Full production N/A N/A LM431CIM3 SOT-23 3 Full production N/A N/A LM431ACM3X SOT-23 3 Full production N/A N/A LM431AIM3X SOT-23 3 Full production N/A N/A LM431BCM3X SOT-23 3 Full production N/A N/A LM431BIM3X SOT-23 3 Full production N/A N/A LM431CCM3X SOT-23 3 Full production N/A N/A Order Parts Samples Samples Order Parts . Order Parts . . Order Parts . LM431CIM3X SOT-23 3 Full production N/A N/A Order Parts . . 2500+ box $0.1480 of 1800 [logo]2T LM431 ACZ 2500+ box $0.1920 of 1800 [logo]2T LM431 AIZ . LM431ACZ TO 92 3 Full production N/A N/A LM431AIZ TO 92 3 Full production N/A N/A LM431BCZ TO 92 3 Full production N/A N/A LM431BIZ TO 92 3 Full production N/A N/A LM431CCZ TO 92 3 Full production N/A N/A LM431CIZ TO 92 3 Full production N/A N/A Order Parts . Order Parts 1K+ $0.2500 box of 1800 [logo]2T LM431 BCZ 1K+ box $0.3300 of 1800 [logo]2T LM431 BIZ 1K+ $0.7400 box of 1800 [logo]2T LM431 CCZ 1K+ $0.8600 box of 1800 [logo]2T LM431 CIZ . Order Parts . Order Parts . Order Parts .

LM431AIM LM431CCM3/ N1B LM431BCM3/ LM431ACM3/ N1D N1F LM431BIM3 N1C - - Z03A 0C to +70C Tape & Reel M08A Rails -40C to +85C Tape &Reel Rails 0C to +70C Tape & Reel MF03A LM431AIM3 N1E Rails -40C to +85C LM431BIM3X LM431AIM3X N1C N1E micro SMD Rails Rails LM431CCM3X/ LM431BCM3X/ LM431ACM3X/ N1B N1D N1F LM431CIM3X N1A NSC Drawing 2% LM431CCZ/ LM431CCZ LM431CIM3 N1A Transport Media Tape &Reel LM431AIBP LM431AIBPX (Note 1) -40C to +85C Note 1: The micro SMD package marking is a 1 digit manufacturing Date Code only micro SMD Top View Marking Example 01005556 2 250 Units Tape and Reel 3k Units Tape and Reel BPA04AFB LM431 Absolute Maximum Ratings (Note 2) Reference Voltage If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reference Input Current 10 mA Internal Power Dissipation (Notes 3, 4) TO-92 Package SO-8 Package SOT-23 Package 0.78W 0.81W 0.28W Storage Temperature Range -65C to +150C Oper

8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 CCM LM431CCM3 ACTIVE SOT-23 DBZ 3 1000 TBD CU SNPB Level-1-260C-UNLIM -40 to 85 N1B LM431CCM3/NOPB ACTIVE SOT-23 DBZ 3 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 N1B LM431CCM3X ACTIVE SOT-23 DBZ 3 3000 TBD CU SNPB Level-1-260C-UNLIM -40 to 85 N1B LM431CCM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 N1B LM431CCZ/NOPB ACTIVE TO-92 LP 3 1800 Green (RoHS & no Sb/Br) SNCU Level-1-NA-UNLIM -40 to 85 LM431 CCZ LM431CIM ACTIVE SOIC D 8 95 TBD CU SNPB Level-1-235C-UNLIM -40 to 85 431 CIM LM431CIM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 431 CIM LM431CIM3 ACTIVE SOT-23 DBZ 3 1000 TBD CU SNPB Level-1-260C-UNLIM -40 to 85 N1A LM431CIM3/NOPB ACTIVE SOT-23 DBZ 3 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 N1A LM431CIM3X ACTIVE SOT-23 DBZ 3 3000 TBD CU SNPB Level-1-260C-UNLIM -40 to 85 N1A LM431CIM3X/NO