NCP431: Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator
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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.
The NCP432 has exactly the same functionality and electrical specifications as the NCP431, but has an alternate pin configuration.
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Applications | End Products | |
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Technical Documentation & Design Resources
Design Notes (5) | Package Drawings (3) |
Simulation Models (3) | Videos (2) |
Data Sheets (1) | Evaluation Board Documents (13) |
Evaluation/Development Tool Information
Product | Status | Compliance | Short Description | Action | |
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NCP12510B65GEVB | Active |
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65 W notebook adapter Evaluation Board | ||
NCP1340UHDGEVB | Active |
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High-Voltage, Quasi-Resonant Controller Featuring Valley Lock-Out Switching Evaluation Board | ||
POE-GEVB | Active |
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Power over Ethernet (PoE) Shield Evaluation Board |
Availability & Samples
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Specifications
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Case Outlines
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Application Diagram
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Case Outline |
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NCP431ACDR2G | Active |
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NCP431, 0°C to 70°C | SOIC-8 | 751-07 | 1 | 260 | Tape and Reel | 2500 | $0.1479
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NCP431ACLPRAG | Active |
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NCP431, 0°C to 70°C | TO-92 | 29-11 | NA | Tape and Reel | 2000 | Contact Sales Office
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NCP431ACSNT1G | Active |
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NCP431, 0°C to 70°C | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.0933
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NCP431AIDR2G | Active |
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NCP431, −40°C to 85°C | SOIC-8 | 751-07 | 1 | 260 | Tape and Reel | 2500 | Contact Sales Office | ||||||||
NCP431AILPRAG | Active |
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NCP431, −40°C to 85°C | TO-92 | 29-11 | NA | Tape and Reel | 2000 | $0.154 | |||||||||
NCP431AISNT1G | Active |
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NCP431, ?40�C to 85�C | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.0933
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NCP431AVDR2G | Active |
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NCP431, −40°C to 125°C | SOIC-8 | 751-07 | 1 | 260 | Tape and Reel | 2500 | Contact Sales Office | ||||||||
NCP431AVLPG | Last Shipments |
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NCP431 | TO-92 | 29-11 | NA | Bulk Bag | 2000 | ||||||||||
NCP431AVLPRAG | Active |
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NCP431, −40°C to 125°C | TO-92 | 29-11 | NA | Tape and Reel | 2000 | Contact Sales Office
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NCP431AVSNT1G | Active |
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NCP431 | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.0933 | ||||||||
NCP431BCSNT1G | Active |
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NCP431, 0°C to 70°C | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | Contact Sales Office | ||||||||
NCP431BISNT1G | Active |
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NCP431, −40°C to 85°C | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.104
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NCP431BVSNT1G | Active |
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NCP431, −40°C to 125°C | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | Contact Sales Office
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NCP432BCSNT1G | Active |
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NCP431 | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.0885 | ||||||||
NCP432BISNT1G | Active |
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NCP431 | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.1067 | ||||||||
NCP432BVSNT1G | Active |
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NCP431 | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.1067
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SC431AVSNT1G | Active |
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NCP431 | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.1867 | ||||||||
SC431BVSNT1G | Active |
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NCP431 | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.2
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SC432BVSNT1G | Active |
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NCP431 | SOT-23-3 | 318-08 | 1 | 260 | Tape and Reel | 3000 | $0.2
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Market Leadtime (weeks) | : | 2 to 4 |
ON Semiconductor (2020-09-02 00:00) | : | 20,000 |
Market Leadtime (weeks) | : | Contact Factory |
ON Semiconductor (2020-09-02 00:00) | : | 34,000 |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | 2 to 4 |
ON Semiconductor (2020-09-02 00:00) | : | 22,500 |
Market Leadtime (weeks) | : | Contact Factory |
ON Semiconductor (2020-09-02 00:00) | : | 14,000 |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | 2 to 4 |
ON Semiconductor (2020-09-02 00:00) | : | 10,000 |
Market Leadtime (weeks) | : | Contact Factory |
ON Semiconductor (2020-09-02 00:00) | : | 4,000 |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | Contact Factory |
FutureElectronics (2020-08-19 00:00) | : | >1K |
Avnet (2020-08-19 00:00) | : | >10K |
Market Leadtime (weeks) | : | 2 to 4 |
ON Semiconductor (2020-09-02 00:00) | : | 33,000 |
Market Leadtime (weeks) | : | 4 to 8 |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | 2 to 4 |
ON Semiconductor (2020-09-02 00:00) | : | 51,000 |
Market Leadtime (weeks) | : | Contact Factory |
Avnet (2020-08-19 00:00) | : | >1K |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | Contact Factory |
FutureElectronics (2020-08-19 00:00) | : | >1K |
Market Leadtime (weeks) | : | 8 to 12 |
Market Leadtime (weeks) | : | Contact Factory |
Product
Description
Pricing ($/Unit)
Compliance
Status
Type
V(BR) Typ (V)
Tolerance (%)
IQ Typ (mA)
IR Min (mA)
VF Max (V)
TA Min (°C)
TA Max (°C)
Package Type
NCP431ACSNT1G
$0.0933
Pb
A
H
P
Active
Adjustable
2.5
1
0.04
0.04
36
0
70
SOT-23-3
NCP431AILPRAG
$0.154
Pb
A
H
P
Active
Adjustable
2.5
1
0.04
0.04
36
-40
85
TO-92
NCP431AISNT1G
$0.0933
Pb
A
H
P
Active
Adjustable
2.5
1
0.04
0.04
36
-40
85
SOT-23-3
NCP431BISNT1G
$0.104
Pb
A
H
P
Active
Adjustable
2.5
0.5
0.04
0.04
36
-40
85
SOT-23-3
NCP431BVSNT1G
Pb
A
H
P
Active
Adjustable
2.5
0.5
0.04
0.04
36
-40
125
SOT-23-3
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