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

Overview
Specifications
Packages
Applications
Datasheet: Programmable Precision References
Rev. 6 (402.0kB)
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»No Product Change Notifications exist
Product Overview
Product Description
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.
Features   Benefits
     
  • Low Minimum Operating Current: 40 uA, Typ @ 25C
 
  • Reduced power consumption
  • Voltage Reference Tolerance: 1%, Typ @ 25C
 
  • Accurate Reference Voltage
  • Programmable Output Voltage to 36 V
 
  • Allows for use in a broad range of applications
  • Low Dynamic Output Impedance, 0.22ohm Typical
 
  • High and stable gain even at very low cathode current operation
  • Temperature Compensated for Operation over Full Rated Operating
    Temperature Range
 
  • Accurate and reliable operation over the temperature range
  • Equivalent FullRange Temperature Coefficient of 50 ppm/C
    Typical
 
  • Accurate reference across temperature
  • NCP431 is pin compatible to the TL432
 
  • Easily upgrade performance with no board level change
  • NCP432 is pin compatible to the TL431
 
  • Alternate pin configuration
Applications   End Products
  • Switchmode Power Supplies
  • Instrumentation
 
  • Adapters
  • Flat TVs
Technical Documentation & Design Resources
Design Notes (4) Package Drawings (3)
Data Sheets (1)  
Availability and Samples
Product
Status
Compliance
Description
Package
MSL*
Container
Budgetary Price/Unit
Type
Case Outline
Type
Qty.
NCP431ACDR2G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C SOIC-8 751-07 1 Tape and Reel 2500 Contact Sales Office
NCP431ACLPRAG Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C TO-92 29-11 NA Tape and Reel 2000 Contact Sales Office
NCP431ACSNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C SOT-23-3 318-08 1 Tape and Reel 3000 $0.1067
NCP431AIDR2G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C SOIC-8 751-07 1 Tape and Reel 2500 Contact Sales Office
NCP431AILPRAG Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C TO-92 29-11 NA Tape and Reel 2000 $0.1467
NCP431AISNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C SOT-23-3 318-08 1 Tape and Reel 3000 $0.1267
NCP431AVDR2G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C SOIC-8 751-07 1 Tape and Reel 2500 Contact Sales Office
NCP431AVLPG Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator TO-92 29-11 NA Bulk Bag 2000 Contact Sales Office
NCP431AVLPRAG Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C TO-92 29-11 NA Tape and Reel 2000 Contact Sales Office
NCP431AVSNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C SOT-23-3 318-08 1 Tape and Reel 3000 $0.1467
NCP431BCSNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C SOT-23-3 318-08 1 Tape and Reel 3000 Contact Sales Office
NCP431BISNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C SOT-23-3 318-08 1 Tape and Reel 3000 Contact Sales Office
NCP431BVSNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C SOT-23-3 318-08 1 Tape and Reel 3000 Contact Sales Office
NCP432BCSNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator SOT-23-3 318-08 1 Tape and Reel 3000 $0.112
NCP432BISNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator SOT-23-3 318-08 1 Tape and Reel 3000 $0.1227
NCP432BVSNT1G Active
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator SOT-23-3 318-08 1 Tape and Reel 3000 $0.16
SC431AVSNT1G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator SOT-23-3 318-08 1 Tape and Reel 3000 $0.2133
Moisture Sensitivity level (MSL) for surface mount devices (lead free measured at 260°C reflow, non lead free at 235°C reflow)
Market Leadtime (weeks) :
Avnet   (2014-10-01 00:00) : >1K
Mouser   (2014-10-01 00:00) : >1K
Newark   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Avnet   (2014-10-01 00:00) : >1K
Digi-Key   (2014-10-01 00:00) : <100
Mouser   (2014-10-01 00:00) : >1K
Newark   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Avnet   (2014-10-01 00:00) : >1K
Digi-Key   (2014-10-01 00:00) : >1K
Mouser   (2014-10-01 00:00) : >1K
Newark   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Mouser   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Mouser   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Mouser   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Mouser   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Mouser   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Mouser   (2014-10-01 00:00) : >1K
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Datasheet: Programmable Precision References
Rev. 6 (402.0kB)
»View Material Composition
»No Product Change Notifications exist
Product Overview

Product Compliance Status Description Type V(BR) Typ (V) Tolerance (%) IQ Typ (mA) IR Min (mA) VF Max (V) TA Min (°C) TA Max (°C) Package Type
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C   Adjustable   2.5   1   0.04   0.04   36   0   70   SOIC-8 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C   Adjustable   2.5   1   0.04   0.04   36   0   70   TO-92 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C   Adjustable   2.5   1   0.04   0.04   36   0   70   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C   Adjustable   2.5   1   0.04   0.04   36   -40   85   SOIC-8 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C   Adjustable   2.5   1   0.04   0.04   36   -40   85   TO-92 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C   Adjustable   2.5   1   0.04   0.04   36   -40   85   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C   Adjustable   2.5   1   0.04   0.04   36   -40   125   SOIC-8 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator   Adjustable   2.5   1   0.04   0.04   36   -40   125   TO-92 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C   Adjustable   2.5   1   0.04   0.04   36   -40   125   TO-92 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C   Adjustable   2.5   1   0.04   0.04   36   -40   125   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, 0°C to 70°C   Adjustable   2.5   1   0.04   0.04   36   0   70   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 85°C   Adjustable   2.5   1   0.04   0.04   36   -40   85   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator, −40°C to 125°C   Adjustable   2.5   1   0.04   0.04   36   -40   125   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator   Adjustable   2.5   1   0.04   0.04   36   0   70   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator   Adjustable   2.5   1   0.04   0.04   36   -40   85   SOT-23-3 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator   Adjustable   2.5   1   0.04   0.04   36   -40   125   SOT-23-3 
 AEC Qualified 
 PPAP Capable 
 Pb-free 
 Halide free 
 Active     Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator   Adjustable   2.5   1   0.04   0.04   36   -40   125   SOT-23-3 
Datasheet: Programmable Precision References
Rev. 6 (402.0kB)
»View Material Composition
»No Product Change Notifications exist
Product Overview
Case Outlines
751-07    29-11    318-08   
Packages
Datasheet: Programmable Precision References
Rev. 6 (402.0kB)
»View Material Composition
»No Product Change Notifications exist
Product Overview
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