NJM431S/NJM432S ADJUSTABLE PRECISION SHUNT REGULATOR GENERAL DESCRIPTION PACKAGE OUTLINE The NJM431S/NJM432S are adjustable precision shunt regulators. The output voltage may be set to any value between VREF (about 2.5V) and 36V by two resistors. Compared to the conventional 431, the NJM431S/NJM432S are NJM431SU NJM431SF improved the voltage accuracy. And they have smaller package NJM432SF NJM432SU option to support a wide range of applications. (SOT-89-3) (SOT-23-5) The NJM432S is the pin assignment option. FEATURES Operating Voltage V to 36V REF Precision Voltage Reference 2.4951.8% Adjustable Output Voltage Bipolar Technology Package Outline NJM431SU / NJM432SU SOT-89-3 NJM431SF / NJM432SF SOT-23-5 BLOCK DIAGRAM / SYMBOL CATHODE CATHODE REFERENCE + REFERENCE - V REF ANODE ANODE PIN CONFIGURATION NJM431SU NJM431SF NJM432SU NJM432SF 4 4 5 5 1 2 3 1 2 3 1 2 3 1 2 3 1.REFERENCE 1.N.C. 1.CATHODE 1.N.C. 2.ANODE 2.ANODE* 2.ANODE 2.ANODE 3.CATHODE 3.CATHODE 3.REFERENCE 3.N.C. 4.REFERENCE 4.CATHODE 5.ANODE 5.REFERENCE * Pin 2 is attached to Substrate and must be connected to ANODE or left open. Ver.2021-05-06 - 1 - NJM431S/NJM432S ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL MAXIMUM RATINGS UNIT Cathode Voltage V 37 (*1) V KA Continuous Cathode Current I -100 to 150 mA K Reference Input Current I -0.05 to 10 mA REF SOT-89-3 : 625(*2) : 1300(*3) Power Dissipation P mW D SOT-23-5 : 480(*4) : 650(*5) Operating Temperature Range T -40 to +125 C opr Storage Temperature Range Tstg -50 to +150 C (*1) Unless specified, all voltage value are with respect to the anode pin. 2 (*2) Mounted on glass epoxy board. (76.2 114.3 1.6mm: EIA/JEDEC standard size, 2Layers, Cu area 100mm ) (*3) Mounted on glass epoxy board. (76.2 114.3 1.6mm: EIA/JEDEC standard, 4Layers) (For 4Layers: Applying 74.274.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5) (*4) Mounted on glass epoxy board. (76.2 114.3 1.6mm: EIA/JEDEC standard size, 2Layers) (*5) Mounted on glass epoxy board. (76.2 114.3 1.6mm: EIA/JEDEC standard size, 4Layers), internal Cu area: 74.2 74.2mm RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL MIN. TYP. MAX. UNIT Cathode Voltage V V - 36 V KA REF 0.7 - 100 mA Cathode Current I K ELECTRICAL CHARACTERISTICS (I =10mA, T =25C) K a PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT Reference Voltage V V =V (*6) 2450 2495 2540 mV REF KA REF Reference Input Voltage Change V V =V (*6) REF KA REF - 8 17 mV Over Temperature Range (dev) T =-40C to +85C a Reference Voltage Change V / (*7) V =10V-V -2.7 REF KA REF -1.4 - mV/V -1 vs. Cathode Voltage Change VKA VKA=36V-10V -2 Reference Input Current I R1=10k, R2=(*7) - 2 4 A REF Reference Input Current Change I R1=10k, R2=(*7) REF - 0.4 1.2 A Over Temperature Range (dev) T =-40C to +85C a Minimum Cathode Current I V =V (*6) - 0.4 0.7 mA MIN KA REF OFF State Cathode Current I V =36V, V =0V(*8) - 0.1 1.0 A OFF KA REF V =V , I =1mA to 100mA, KA REF K Dynamic Impedance Z - 0.2 0.5 KA f1kHz(*6) The maximum value of Dynamic Impedance, Reference Voltage Change and Reference Input Current Change are determined based on sampling evaluation from the initial production lots, and thus not tested in the production test. Therefore, these values are for the reference design purpose only. (*6) Test Circuit Fig.1 (*7) Test Circuit Fig.2 (*8) Test Circuit Fig.3 Ver.2021-05-06 - 2 -