NCP431 Series

Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator

Catalog

Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator

Part	Voltage - Output (Min/Fixed)	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Max) [Max]	Current - Cathode [custom]	Package / Case	Temperature Coefficient	Current - Output	Supplier Device Package	Supplier Device Package	Tolerance	Mounting Type	Reference Type	Package / Case [y]	Package / Case [x]	Qualification	Grade
ON Semiconductor NCP431ACLPRAG	2.5 V	Adjustable	70 °C	0 °C	36 V	100 mA	TO-226-3 TO-92-3 Long Body	50 ppm/°C	40 µA	TO-92	TO-226	1 %	Through Hole	Shunt
ON Semiconductor NCP431ACDR2G	2.5 V	Adjustable	70 °C	0 °C	36 V	100 mA	8-SOIC	50 ppm/°C	40 µA	8-SOIC		1 %	Surface Mount	Shunt	3.9 mm	0.154 in
ON Semiconductor NCP431AVSNT1G	2.5 V	Adjustable	125 °C	-40 °C	36 V	100 mA	SC-59 SOT-23-3 TO-236-3	50 ppm/°C	40 µA	SOT-23-3 (TO-236)		1 %	Surface Mount	Shunt
ON Semiconductor SC431AVSNT1G	2.5 V	Adjustable	125 °C	-40 °C	36 V	100 mA	SC-59 SOT-23-3 TO-236-3	50 ppm/°C	40 µA	SOT-23-3 (TO-236)		1 %	Surface Mount	Shunt			AEC-Q100	Automotive
ON Semiconductor NCP431AVLPG	2.5 V	Adjustable	125 °C	-40 °C	36 V	100 mA	Formed Leads TO-226-3 TO-92-3 Long Body	50 ppm/°C	40 µA	TO-92	TO-226	1 %	Through Hole	Shunt
ON Semiconductor NCP431AIDR2G	2.5 V	Adjustable	85 °C	-40 °C	36 V	100 mA	8-SOIC	50 ppm/°C	40 µA	8-SOIC		1 %	Surface Mount	Shunt	3.9 mm	0.154 in
ON Semiconductor SC432BVSNT1G	2.5 V	Adjustable	125 °C	-40 °C	36 V	100 mA	SC-59 SOT-23-3 TO-236-3	50 ppm/°C	40 µA	SOT-23-3 (TO-236)			Surface Mount	Shunt			AEC-Q100	Automotive

Catalog

Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator

Key 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 OperatingTemperature Range

• Equivalent FullRange Temperature Coefficient of 50 ppm/CTypical

• NCP431 is pin compatible to the TL432

• NCP432 is pin compatible to the TL431

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.