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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% 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 TL431QDBZRG4 is an automotive-grade adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 2.495V to 36V with a maximum input voltage of 37V. The device provides a maximum output current of 100mA and maintains an initial accuracy of 0.5%. It features a temperature coefficient of 92ppm/°C and functions reliably across an operating temperature range from -40°C to +125°C. Packaged in a surface-mount SOT-23-3 format, it is supplied in tape and reel quantities for automated assembly.
Feature Summary
- Automotive qualification compliant with AEC-Q100 standards for high reliability
- Adjustable output voltage via external resistors within specified limits
- Low dynamic output impedance for stable regulation under varying loads
Applications
- Automotive power supply regulation circuits
- Precision voltage reference sources in vehicle electronics
- On-board charger and DC-DC converter feedback loops
Procurement Notes
Verify the complete part number including the G4 suffix to confirm RoHS compliance and lead-free status. Ensure the Q designation is present to validate automotive grade classification and extended temperature performance. Confirm the RG4 suffix indicates the specific SOT-23 tape and reel packaging configuration required for your manufacturing process.
Selection Notes
Select this component when automotive reliability and wide temperature operation are mandatory. The 0.5% initial accuracy suits applications requiring tighter tolerance than standard grades. Compare against TL431BCDBZTG4 if industrial temperature range suffices, or TL431AQDBZRG4 for alternative accuracy levels within the same automotive family.
Part Context
This device belongs to the TL431 family of adjustable shunt regulators, widely used as voltage references and error amplifiers. The Q-series variants are specifically engineered for automotive environments, offering enhanced robustness compared to commercial counterparts. It serves as a critical component in power management systems where precise voltage control is essential.
Replacement Considerations
Direct substitutes include TL431BQDBZRG4 and TL431AQDBZRG4 from Texas Instruments, which share the same package and automotive qualification but differ in accuracy specifications.
