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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.21% 8SO
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TL431ID is a programmable shunt voltage reference manufactured by STMicroelectronics, housed in an 8-pin SOIC surface-mount package. It provides a stable reference voltage with an initial precision of ±1% and operates within a temperature range of -40°C to +105°C. The device supports an output voltage range from 2.5V to 36V, adjustable via external resistors, and features a sink current capability of 1mA to 100mA. It meets AEC-Q100 automotive standards and exhibits a typical dynamic output impedance of 0.22Ω.
Feature Summary
- Provides precise programmable shunt regulation with guaranteed thermal stability across the operating temperature range
- Features active output circuitry for sharp turn-on characteristics suitable for switching power supply applications
- Complies with AEC-Q100 automotive qualification standards for enhanced reliability
Applications
- Board-level voltage regulation
- Adjustable power supplies
- Switching power supply circuits
- Voltage monitoring systems
Procurement Notes
Verify the specific suffix 'ID' against the official STMicroelectronics datasheet to confirm the exact tolerance grade and temperature rating. Ensure the ordering code matches the required 8-SOIC package dimensions and lead finish specifications. Confirm compliance with RoHS3 directives and REACH regulations prior to procurement.
Selection Notes
Select this component when high-precision voltage referencing is required in space-constrained designs utilizing surface-mount technology. The wide operating temperature range and automotive qualification make it suitable for industrial and automotive environments where standard commercial-grade references may fail.
Part Context
This part belongs to the TL431 family of programmable shunt regulators, widely used as a low-cost alternative to Zener diodes. The TL431 series offers superior accuracy and temperature stability compared to discrete components, enabling precise feedback control in isolated and non-isolated power conversion topologies.
Replacement Considerations
Pin-compatible alternatives include the TL431AIDT and TL431BIDT variants from STMicroelectronics, which offer different initial precision grades. Cross-manufacturer equivalents such as the LM431 or REF43 series should be evaluated for pinout compatibility and electrical parameter matching.
