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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The TL431IDBZRG4 is a three-terminal adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 2.495V to 36V and provides an initial accuracy of ±1% at 25°C. The device features a typical output impedance of 0.2Ω and supports a maximum cathode current of 100mA. It is housed in a surface-mount SOT-23 package with three pins, designed for thermal stability across specified temperature ranges.
Feature Summary
- Provides precise adjustable reference voltage functionality via external resistors
- Features low output impedance for stable regulation performance
- Offers high thermal stability suitable for various operating environments
Applications
- Board-level voltage regulation circuits
- Adjustable power supply designs
- Switching power supply feedback loops
Procurement Notes
Verify the specific suffix 'RG4' against official Texas Instruments documentation to confirm packaging details and environmental compliance status. Ensure the ordering information matches the required reel specifications and that the component meets all applicable RoHS standards for the intended deployment region.
Selection Notes
Select this component when a ±1% initial accuracy is required for precision voltage referencing applications. Consider the SOT-23 package constraints for space-limited designs. Evaluate the 100mA current capability against load requirements and ensure the operating temperature range aligns with the system's thermal profile.
Part Context
This part belongs to the TL431 family of programmable shunt regulators. It shares functional similarities with other variants like the TL431AIDBZR but differs in initial tolerance grades. The device serves as a direct replacement for Zener diodes in many linear and switching regulator topologies requiring higher precision.
Replacement Considerations
The TL431IDBZR is listed as a manufacturer-recommended alternative. Verify pinout compatibility and electrical parameter alignment before substitution.
