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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% TO92-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Bulk
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 Long Body, Formed Leads
- Supplier Device Package：TO-92 (TO-226)
- Grade：-
- Qualification：-
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Overview
The TL431CLPRE is a three-terminal programmable shunt regulator diode manufactured by onsemi. It operates as a low temperature coefficient zener, programmable from Vref to 36 V using two external resistors. The device features a wide operating current range of 1.0 mA to 100 mA and a typical dynamic impedance of 0.22 Ω. It includes a 2.5 V reference for stable operation from 5.0 V logic supplies. The component functions as either a positive or negative voltage reference.
Feature Summary
- Programmable output voltage capability up to 36 V
- Low dynamic output impedance for precise regulation
- Temperature compensated for full rated operating range
Applications
- Digital voltmeters
- Power supplies
- Op amp circuitry
Procurement Notes
Verify the specific suffix 'CLPRE' against official datasheets to confirm package type and tape-and-reel specifications. Ensure compliance with RoHS and halogen-free requirements if mandated by project standards. Confirm AEC-Q100 qualification status if automotive application is intended, as prefixes may dictate site and control changes.
Selection Notes
Select this component when a precision, adjustable voltage reference is required in a compact form factor. Consider its 1.0 mA to 100 mA sink current capability for feedback loop applications. Evaluate the 0.22 Ω dynamic impedance for noise-sensitive designs. Verify that the 36 V maximum rating aligns with the system's supply voltage constraints.
Part Context
This part belongs to the TL431 family of programmable precision references. These devices are widely used as replacements for traditional Zener diodes due to their superior accuracy and temperature stability. The family supports various packaging options and prefixes for different qualification levels, including automotive-grade variants.
Replacement Considerations
Compatible alternatives include TL431A, TL431B, LM431SACMLX, and TL431BIDMT. Verify pinout compatibility and electrical parameter alignment, particularly dynamic impedance and reference tolerance, before substitution.
