NCP431AISNT1G Voltage References & Supervisors by ON Semiconductor

Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator

Status: Active
Series: NCP431
RoHS: Compliant
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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.

Prices starting from US$0.10


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Logo for Newark Electronics Newark Electronics US$0.11
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Logo for Future Electronics Future Electronics US$0.10
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Logo for Avnet America Avnet America US$0.11
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Logo for RS Americas RS Americas US$0.26
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Logo for element14 element14 US$0.11
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Logo for Avnet Asia Avnet Asia US$0.10
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Logo for Farnell Farnell US$0.11
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Features

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 Operating Temperature Range
Equivalent FullRange Temperature Coefficient of 50 ppm/C Typical
NCP431 is pin compatible to the TL432
NCP432 is pin compatible to the TL431
Benefits
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
Applications
Switchmode Power Supplies
Adapters
End Products
Instrumentation
Flat TVs

Specifications

Description NCP431, ?40�C to 85�C
Compliance Pb-free Halide free
Type Adjustable
V(BR) Typ (V) 2.5
Tolerance (%) 1
IQ Typ (mA) 0.04
IR Min (mA) 0.04
VF Max (V) 36
TA Min (°C) -40
TA Max (°C) 85
Package Type SOT-23-3

Alternative Descriptions

Voltage Reference Programmable 1% SOT23 | RS
Voltage Reference Type:Shunt - Adjustable | Newark Electronics
NCP431A Series 2.5 V ▒ 1% Surface Mount Programmable Shunt Regulator - SOT-23-3 | Future Electronics
V-Ref Adjustable 2.5V to 36V 100mA 3-Pin SOT-23 T/R | Avnet America
NCP431AISNT1G, Adjustable Shunt Voltage Reference 2.5 - 36V, 1%, 3-Pin SOT-23 | ON Semiconductor NCP431AISNT1G | RS Americas
VOLTAGE REF, SHUNT, 2.5V-36V, SOT-23-3 | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP431AISNT1G?

Additional datasheets, footprints and schematics for NCP431AISNT1G are listed on our Part Details page. You can also find images and similar parts to NCP431AISNT1G on this page.

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What category does NCP431AISNT1G fall under?

The NCP431AISNT1G is listed under Power Management > Voltage References & Supervisors > Voltage References.

Can I view similar or alternative parts?

You can view similar parts to NCP431AISNT1G when available in the Voltage References range under the specifications section at the bottom of the details page.

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Is the NCP431AISNT1G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for NCP431AISNT1G have stock available?

Authorised distributors including RS, Newark Electronics, Future Electronics, Avnet America and RS Americas have stock available or on a lead time for NCP431AISNT1G.

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