1BCM/ 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 contac

P 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 Dissipat

1BCM/ 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 contac

60C-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

-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.

-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.