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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：40 µA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3 (TO-236)
- Grade：-
- Qualification：-
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Overview
The NCP431ACSNT1G is a programmable precision shunt reference from onsemi, housed in an SOT-23-3 package. It operates with a cathode-to-anode voltage range of Vref to 36 V and supports a continuous cathode current of 40 µA to 100 mA. The device features a typical dynamic impedance of 0.22 Ω and a reference input tolerance of ±1%. It functions over an ambient temperature range of 0°C to +70°C.
Feature Summary
- Programmable output voltage adjustable from the internal reference level up to 36 V using external resistors
- Low minimum operating current enabling extremely low no-load consumption in secondary regulators
- Temperature compensated operation across the full rated operating temperature range
Applications
- Voltage adapters
- Switching power supplies
- Precision voltage references
- Chargers
- Instrumentation
Procurement Notes
Verify the specific suffix 'SN' confirms the SOT-23-3 surface-mount package configuration. Confirm the 'A' designation aligns with the required ±1% initial accuracy and the 0°C to +70°C operating temperature range for your design constraints. Ensure RoHS compliance requirements are met by checking the manufacturer's material declaration.
Selection Notes
Select this component when a stable, adjustable voltage reference is needed in a compact SMD footprint. The low minimum cathode current makes it suitable for applications requiring minimal bias current. Verify that the 36 V maximum voltage rating and 100 mA sink capability meet the circuit's electrical demands.
Part Context
This device belongs to the NCP431 series of three-terminal programmable shunt regulator diodes. It serves as a monolithic IC voltage reference, offering a low temperature coefficient zener alternative. The series includes variants with different tolerances and temperature ranges, such as the NCP431B for tighter accuracy.
Replacement Considerations
NCP431BCSNT1G offers 0.5% tolerance. NCP431AISNT1G provides extended -40°C to +85°C temperature range. SC431AVSNT1G supports -40°C to +125°C and AEC-Q100 qualification.
