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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：18 V
- Current - Output：70 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：Automotive
- Qualification：AEC-Q100
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Overview
The TLVH431BQDBZRQ1 is an automotive-grade, low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 1.25 V to 18 V with an initial accuracy of 0.5% and a temperature coefficient of 161 ppm/°C. The device supports a maximum cathode current of 80 mA and withstands input voltages up to 20 V. It functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount format, it meets AEC-Q100 qualification standards for automotive applications.
Feature Summary
- AEC-Q100 qualified for automotive reliability requirements
- Low-voltage operation suitable for 3V to 3.3V systems
- High output current capability for robust regulation
- Compact SOT-23-3 package for space-constrained designs
Applications
- Isolated feedback circuits in switch-mode power supplies
- Secondary side voltage regulation in flyback converters
- Replacement for low-voltage Zener diodes
- Voltage monitoring and supervisory circuits
Procurement Notes
Verify the complete part number including suffixes to ensure correct packaging and automotive grade compliance. Confirm RoHS status and moisture sensitivity level prior to procurement. Check for specific tape-and-reel quantities if ordering bulk volumes. Ensure the supplier provides valid traceability documentation for automotive components.
Selection Notes
Select this component when high current drive (80 mA) is required compared to standard TLV431 variants. It is appropriate for applications needing wider voltage adjustment ranges up to 18 V. Consider thermal management within the SOT-23-3 package limits. Verify that the 161 ppm/°C temperature coefficient meets system stability requirements.
Part Context
This device belongs to the TLVH431 family, designed as an enhanced version of the TLV431 series. It offers higher current capacity and broader voltage ranges while maintaining automotive qualification. The QDBZRQ1 designation indicates the specific pinout, package type, and automotive reliability tier provided by Texas Instruments.
Replacement Considerations
The TLV431BQDBZRQ1 serves as a lower-current alternative within the same family. Non-automotive versions like TLVH431BDBZR lack AEC-Q100 certification. Direct pin-compatible substitutes must be verified against the official TI replacement guide.
