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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% 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 TL431AIDBZRG4 is a precision adjustable shunt regulator from Texas Instruments, housed in a SOT-23 surface-mount package. It operates with an input voltage range of 2.47V to 37V and provides an adjustable output voltage up to 36V. The device features an initial accuracy of ±1% and a maximum cathode current of 100mA. It functions within a temperature range of -40°C to 85°C and exhibits a temperature coefficient of 92 ppm/°C.
Feature Summary
- Provides precise programmable reference voltage via external resistors
- Features low output impedance for stable regulation
- Offers high thermal stability across industrial temperature ranges
Applications
- Adjustable voltage and current references
- Secondary side regulation in flyback switch-mode power supplies
- Replacement for Zener diodes in board-level voltage stabilization
Procurement Notes
Verify the specific suffix 'RG4' against the manufacturer's official documentation to confirm RoHS compliance status and lead time requirements. Ensure the ordering information matches the exact package type and tape-and-reel specifications defined in the datasheet before finalizing procurement orders.
Selection Notes
Select this component when a compact SOT-23 footprint is required alongside standard 36V operation limits. It serves as a direct functional replacement for legacy TL431 variants in designs needing ±1% accuracy. Consider the 100mA current capability for load requirements and verify compatibility with the system's operating temperature range.
Part Context
This part belongs to the widely used TL431 family of programmable shunt regulators. It maintains the industry-standard three-terminal configuration while offering improved thermal performance compared to older generations. The device is designed for general-purpose voltage referencing in consumer and industrial electronics.
Replacement Considerations
Direct pin-compatible substitutes include the TL431AIDBZR and ATL431AIDBZR. Verify that alternative manufacturers meet the same ±1% accuracy and 36V maximum rating specifications.
