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Product Detailed Parameters
- Description：IC VREF SHUNT 2.495V SOT23-3
- Series：-
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：TO-236AB
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The TL431AIDBZR-QR is a three-terminal adjustable precision shunt regulator from the Nexperia TL431 family, designed for automotive applications. It operates with an output voltage range between Vref (2.495 V) and 36 V, set by two external resistors. The device features a typical temperature drift of 9 mV over the -40 °C to 85 °C ambient temperature range and offers a reference voltage tolerance of 1%. It supports sink currents from 1 mA to 100 mA with a typical output impedance of 0.2 Ω. Qualified under AEC-Q101 standards, it utilizes a SOT-23 surface-mount package.
Feature Summary
- Programmable output voltage up to 36 V via external resistors
- Automotive-grade qualification compliant with AEC-Q101 standards
- Low output noise and high stability across specified temperature ranges
Applications
- Shunt regulator circuits in automotive electronics
- Precision current limiter designs
- Isolated feedback loops for Switch Mode Power Supplies (SMPS)
Procurement Notes
Verify component authenticity through authorized Nexperia distributors or certified supply chain partners. Confirm that the specific suffix indicates automotive grade compliance and matches the required AEC-Q101 qualification level. Ensure packaging details align with production requirements before finalizing orders.
Selection Notes
Select this component when automotive reliability and precise voltage referencing are required. The 1% tolerance suits applications needing tighter regulation than standard grades. Verify that the SOT-23 package fits the PCB layout constraints and that the operating temperature range covers the intended environmental conditions.
Part Context
This part belongs to the widely used TL431 family of programmable shunt regulators. It serves as a drop-in replacement for similar devices in power management and control circuits. The automotive variant ensures robustness against thermal and electrical stresses common in vehicle environments.
Replacement Considerations
Compatible substitutes include TL431AQDBZR-QR and TL431BIDBZR-QR within the same Nexperia automotive lineup. Cross-brand equivalents like the TI TL431AIDBZR may function similarly but require verification of automotive qualification status and pinout compatibility.
