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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)：2.5V
- 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 ATL431BQDBZR is an automotive-grade, adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 2.5 V to 36 V and features an initial accuracy of ±0.5%. The device supports a maximum cathode current of 100 mA with a minimum operating current of 80 µA. It exhibits a temperature coefficient of 82 ppm/°C and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount format, it integrates into power management systems requiring stable reference voltages.
Feature Summary
- Automotive qualification compliant with AEC-Q100 standards for reliability
- Adjustable output voltage capability via external resistive divider
- Low quiescent current operation suitable for energy-efficient designs
- Precision initial accuracy ensuring stable reference performance
Applications
- Automotive power supply regulation circuits
- Battery monitoring and management systems
- Industrial control system voltage references
- Embedded controller reset and supervision logic
Procurement Notes
Verify the complete part number including suffixes to ensure correct automotive grade and package configuration. Confirm RoHS compliance status matches project requirements. Check datasheet revisions for any recent design changes or pinout updates. Ensure ordering quantities align with manufacturer standard packaging options. Validate supplier authenticity through authorized distribution channels.
Selection Notes
Select this component when automotive reliability and low standby current are critical. Compare against TL431 variants if higher cathode current or different accuracy levels are needed. Consider thermal performance within the SOT-23-3 package for high-power applications. Evaluate circuit complexity required for achieving desired output voltage stability.
Part Context
This device belongs to the ATL431 family of low-IQ adjustable shunt regulators designed specifically for automotive environments. It serves as a direct upgrade or alternative to standard TL431 devices where stricter quality and environmental resilience are mandated. The family offers various accuracy grades and package options to suit diverse electronic control unit architectures.
Replacement Considerations
TL431BQDBZR is a non-automotive equivalent with similar electrical characteristics but lacks AEC-Q100 certification. ATL431LIBQDBZR offers lower temperature coefficient and higher bandwidth for precision applications.
