NCP431: Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator

The NCP431 integrated circuits are three-terminal programmable shunt regulator diodes. They are a direct upgrade to the industry standard TL431A. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V using two external resistors. These devices exhibit a wide operating current range of 40 µA to 100 mA with a typical dynamic impedance of 0.22Ω. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 V reference makes it convenient to obtain a stable reference from 5.0 V logic supplies, and since the NCP431 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. Low minimum operating current makes this device an ideal choise for secondary regulators in SMPS adapters with extremely low no-load consumption.The NCP432 has exactly the same functionality and electrical specifications as the NCP431, but has an alternate pin configuration.

特性
  • Low Minimum Operating Current: 40 uA, Typ @ 25C
  • Voltage Reference Tolerance: 1%, Typ @ 25C
  • Programmable Output Voltage to 36 V
  • Low Dynamic Output Impedance, 0.22ohm Typical
  • Temperature Compensated for Operation over Full Rated OperatingTemperature Range
  • Equivalent FullRange Temperature Coefficient of 50 ppm/CTypical
  • NCP431 is pin compatible to the TL432
  • NCP432 is pin compatible to the TL431
优势
  • Reduced power consumption
  • Accurate Reference Voltage
  • Allows for use in a broad range of applications
  • High and stable gain even at very low cathode current operation
  • Accurate and reliable operation over the temperature range
  • Accurate reference across temperature
  • Easily upgrade performance with no board level change
  • Alternate pin configuration
应用
  • Switchmode Power Supplies
  • Instrumentation
终端产品
  • Adapters
  • Flat TVs
封装
封装图纸 (3)
Document TitleDocument ID/SizeRevision
SOIC-8 Narrow Body751-07 (62.6kB)AK
SOT-23318-08 (33.4kB)AR
TO-92 (TO-226) 5.33mm Body Height29-11 (61.7kB)A
仿真模型 (2)
Document TitleDocument ID/SizeRevisionRevision Date
NCP431 PSPICE MODELNCP431 PSPICE MODEL0
NCP431 SCHEMATIC LIBRARYNCP431 SCHEMATIC LIBRARY (6kB)0
数据表 (1)
Document TitleDocument ID/SizeRevisionRevision Date
Programmable Precision ReferencesNCP431/D (470kB)15Oct, 2016
评估板文档 (14)
Document TitleDocument ID/SizeRevisionRevision Date
65 W Notebook Off-line Adaptor with NCP12510 EVB User ManualEVBUM2485/D (550kB)0Aug, 2016
Implementing All-in-One PC Power Supply Evaluation Board User's ManualEVBUM2342/D (1827kB)1Dec, 2015
NCP12510B65GEVB Bill Of Materials (ROHS Compliant)NCP12510B65GEVB_BOM_ROHS.pdf (56kB)0
NCP12510B65GEVB Gerber Layout Files (Zip Format)NCP12510B65GEVB_GERBER.zip (64kB)0
NCP12510B65GEVB SchematicNCP12510B65GEVB_SCHEMATIC.pdf (106kB)0
NCP12510B65GEVB Test ProcedureNCP12510B65GEVB_TEST_PROCEDURE.pdf (127kB)0
NCP1340UHDGEVB Bill Of Materials (ROHS Compliant)NCP1340UHDGEVB_BOM_ROHS.pdf (62kB)0
NCP1340UHDGEVB Gerber Layout Files (Zip Format)NCP1340UHDGEVB_GERBER.zip (70kB)0
NCP1340UHDGEVB SchematicNCP1340UHDGEVB_SCHEMATIC.pdf (74kB)0
NCP1399AIOGEVB Bill Of Materials (ROHS Compliant)NCP1399AIOGEVB_BOM_ROHS.pdf (120kB)0
NCP1399AIOGEVB Gerber Layout Files (Zip Format)NCP1399AIOGEVB_GERBER.zip (232kB)0
NCP1399AIOGEVB SchematicNCP1399AIOGEVB_SCHEMATIC.pdf (724kB)1
NCP1399AIOGEVB Test ProcedureNCP1399AIOGEVB_TEST_PROCEDURE.pdf (61kB)0
Test ProcedureNCP1340UHDGEVB_TEST_PROCEDURE.pdf (88kB)0
评估板与开发工具
产品状况Compliance简短说明
NCP12510B65GEVBIntro PendingPb-free65 W notebook adapter Evaluation Board
NCP1340UHDGEVBActivePb-freeHigh-Voltage, Quasi-Resonant Controller Featuring Valley Lock-Out Switching Evaluation Board
NCP1399AIOGEVBActivePb-free240W All-in-One PC Power Supply Evaluation Board
产品订购型号
产品状况Compliance封装MSL*容器预算价格 (1千个数量的单价）
NCP431ACDR2GActivePb-free Halide freeSOIC-8751-071Tape and Reel2500$0.1408
NCP431ACLPRAGActivePb-free Halide freeTO-9229-11NATape and Reel2000联系BDTIC
NCP431ACSNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.1067
NCP431AIDR2GActivePb-free Halide freeSOIC-8751-071Tape and Reel2500联系BDTIC
NCP431AILPRAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.1467
NCP431AISNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.1267
NCP431AVDR2GActivePb-free Halide freeSOIC-8751-071Tape and Reel2500联系BDTIC
NCP431AVLPGActivePb-free Halide freeTO-9229-11NABulk Bag2000联系BDTIC
NCP431AVLPRAGActivePb-free Halide freeTO-9229-11NATape and Reel2000联系BDTIC
NCP431AVSNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.1467
NCP431BCSNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000联系BDTIC
NCP431BISNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.1636
NCP431BVSNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000联系BDTIC
NCP432BCSNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.112
NCP432BISNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.1368
NCP432BVSNT1GActivePb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.16
SC431AVSNT1GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.2133
SC431BVSNT1GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.22
SC432BVSNT1GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOT-23-3318-081Tape and Reel3000$0.22
订购产品技术参数
ProductTypeV(BR) Typ (V)Tolerance (%)IQ Typ (mA)IR Min (mA)VF Max (V)TA Min (°C)TA Max (°C)
NCP431ACDR2GAdjustable2.510.040.0436070
NCP431ACLPRAGAdjustable2.510.040.0436070
NCP431ACSNT1GAdjustable2.510.040.0436070
NCP431AIDR2GAdjustable2.510.040.0436-4085
NCP431AILPRAGAdjustable2.510.040.0436-4085
NCP431AISNT1GAdjustable2.510.040.0436-4085
NCP431AVDR2GAdjustable2.510.040.0436-40125
NCP431AVLPGAdjustable2.510.040.0436-40125
NCP431AVLPRAGAdjustable2.510.040.0436-40125
NCP431AVSNT1GAdjustable2.510.040.0436-40125
NCP431BCSNT1GAdjustable2.50.50.040.0436070
NCP431BISNT1GAdjustable2.50.50.040.0436-4085
NCP431BVSNT1GAdjustable2.50.50.040.0436-40125
NCP432BCSNT1GAdjustable2.50.50.040.0436070
NCP432BISNT1GAdjustable2.50.50.040.0436-4085
NCP432BVSNT1GAdjustable2.50.50.040.0436-40125
SC431AVSNT1GAdjustable2.510.040.0436-40125
SC431BVSNT1GAdjustable2.50.50.040.0436-40125
SC432BVSNT1GAdjustable2.50.50.040.0436-40125
Programmable Precision References (470kB) NCP431
NCP431 PSPICE MODEL NCP431
NCP431 SCHEMATIC LIBRARY NCP431
EVBUM2485/D - 550 KB NCP12510B65GEVB
EVBUM2342/D - 1827 KB NCP1399AIOGEVB
NCP12510B65GEVB BOM ROHS NCP12510B65GEVB
NCP12510B65GEVB GERBER NCP12510B65GEVB
NCP12510B65GEVB SCHEMATIC NCP12510B65GEVB
NCP12510B65GEVB TEST PROCEDURE NCP12510B65GEVB
NCP1340UHDGEVB BOM ROHS NCP1340UHDGEVB
NCP1340UHDGEVB GERBER NCP1340UHDGEVB
NCP1340UHDGEVB SCHEMATIC NCP1340UHDGEVB
NCP1399AIOGEVB BOM ROHS NCP1399AIOGEVB
NCP1399AIOGEVB GERBER NCP1399AIOGEVB
NCP1399AIOGEVB SCHEMATIC NCP1399AIOGEVB
NCP1399AIOGEVB TEST PROCEDURE NCP1399AIOGEVB
NCP1340UHDGEVB TEST PROCEDURE NCP1340UHDGEVB
SOIC-8 Narrow Body CM1216
TO-92 (TO-226) 5.33mm Body Height NCV33064
SOT-23 CM1214A
NCP431
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