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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT23-3
- Series：-
- Mfr：Texas Instruments
- 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 ~ 125°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 TL431BQDBZTG4 is an adjustable precision shunt regulator from Texas Instruments, designed for automotive applications. It operates within a cathode voltage range of 2.495V to 36V and supports a maximum cathode current of 100mA with a minimum operating current of 600µA. The device features an initial accuracy of 0.5% and a maximum temperature coefficient of 92ppm/°C. It functions reliably across an extended industrial temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount format, it serves as a high-performance reference voltage source.
Feature Summary
- Automotive-grade qualification ensuring reliability in vehicle electronics environments
- High precision voltage regulation with 0.5% initial accuracy tolerance
- Extended thermal stability suitable for harsh operating conditions
Applications
- Automotive power supply circuits
- Precision voltage references in automotive control modules
- Shunt regulation in automotive battery management systems
Procurement Notes
Verify the specific suffix 'G4' confirms lead-free and RoHS compliance status directly on the manufacturer's official documentation. Confirm the automotive grade designation aligns with your system's environmental requirements. Ensure the SOT-23-3 package dimensions match your PCB footprint design constraints before finalizing procurement orders.
Selection Notes
Select this component when automotive qualification is mandatory alongside tight voltage accuracy requirements. The 0.5% tolerance distinguishes it from standard commercial variants. Consider the SOT-23-3 package size if space-constrained designs are required. Verify that the 100mA current capability meets the load demands of the specific shunt regulation application.
Part Context
This part belongs to the TL431 family of programmable shunt regulators, widely used for voltage referencing and feedback control. The 'BQ' designation indicates automotive grade with 0.5% accuracy, while 'DBZ' specifies the SOT-23-3 package. The 'TG4' suffix typically denotes tape-and-reel packaging with specific manufacturing traceability standards defined by Texas Instruments.
Replacement Considerations
Direct substitutes include other automotive-grade TL431 variants with identical pinouts and specifications, such as the TL431AQDBZTG4 or TL431QDBZTG4, provided their accuracy grades meet the circuit requirements.
