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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：15 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 ATL431LIBQDBZR is an automotive-grade, adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 36 V and provides an initial accuracy of 0.5%. The device features a low quiescent current with a minimum cathode current of 80 µA and supports a maximum shunt current of 15 mA. It exhibits a temperature coefficient of 66 PPM/°C and functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in a compact SOT-23-3 surface-mount package.
Feature Summary
- Automotive qualification compliant for high-reliability applications
- High bandwidth performance suitable for fast transient response
- Low quiescent current operation for energy efficiency
- Capable of driving capacitive loads without oscillation
Applications
- Automotive power supply regulation circuits
- Battery management systems requiring precise voltage monitoring
- Industrial control systems with strict reliability standards
- Programmable shunt regulator implementations in harsh environments
Procurement Notes
Verify the complete part number including suffixes to ensure correct automotive grade and packaging specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Check for specific tape and reel dimensions if automated assembly is planned. Ensure the supplier provides valid traceability documentation for automotive components.
Selection Notes
Select this component when automotive AEC-Q100 qualification is mandatory alongside high bandwidth and low IQ requirements. Compare against standard TL431 variants if automotive certification is not required. Consider the SOT-23-3 footprint constraints during PCB layout. Evaluate thermal dissipation needs based on the maximum shunt current capability of 15 mA.
Part Context
This device belongs to the ATL431LI family of programmable shunt regulators designed specifically for automotive electronics. It shares functional similarities with the TL431 series but includes enhanced features such as higher bandwidth and lower quiescent current optimized for vehicle electrical systems. The QDBZ suffix indicates the specific SOT-23-3 package and automotive quality tier.
Replacement Considerations
The ATL431LIBIDBZR serves as a non-automotive equivalent with similar electrical characteristics but lacks automotive qualification. Standard TL431 devices may function electrically but do not meet automotive reliability standards. Verify pinout compatibility before substituting any alternative components.
