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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% TO92-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-25°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The TL431ACLPX is a three-terminal programmable shunt regulator from onsemi, functioning as a precision voltage reference. It operates with an adjustable output voltage range spanning from the internal reference threshold of approximately 2.5 V up to 36 V, set via two external resistors. The device supports a wide operating cathode current range of 1.0 mA to 100 mA and exhibits a typical dynamic output impedance of 0.22 Ω. It features a low temperature coefficient and is housed in a TO-92 package.
Feature Summary
- Programmable output voltage capability using external resistors
- Low dynamic output impedance for stable regulation
- Temperature compensated operation across rated ranges
Applications
- Digital voltmeters
- Power supplies
- Op amp circuitry
Procurement Notes
Verify the specific suffix 'CLPX' against the official onsemi datasheet to confirm pinout compatibility and exact tolerance grades. Ensure the ordering part number matches the required automotive or industrial qualification standards if applicable. Cross-reference the manufacturer's latest documentation to confirm RoHS compliance status and lead time requirements before finalizing procurement.
Selection Notes
Select this component when a precise, adjustable voltage reference is needed to replace standard Zener diodes. The low dynamic impedance makes it suitable for applications requiring high stability. Consider the TO-92 package constraints for thermal management and board space. Verify that the required sink current falls within the 1.0 mA to 100 mA operational window for optimal performance.
Part Context
The TL431 series represents a family of monolithic IC voltage references designed for high-performance analog circuits. These devices offer superior temperature stability compared to discrete Zener diodes. The TL431ACLPX variant specifically utilizes the TO-92 through-hole package, providing a cost-effective solution for general-purpose voltage regulation and reference applications in consumer and industrial electronics.
Replacement Considerations
Compatible substitutes include the TL431AIDBZR (SOT-23) and TL431AILP (TO-92). Verify pinout alignment and package dimensions when replacing surface-mount variants with through-hole equivalents. Ensure electrical parameters such as reference voltage tolerance and operating current range meet the original design specifications.
