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Product Detailed Parameters
- Description：PROGRAMMABLE VOLTAGE REFERENCE
- 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 TLA431AQDBZR is a precision, all-capacitor stable programmable shunt voltage reference manufactured by Texas Instruments. It operates within an input voltage range of 2.5 V to 36 V and provides an initial accuracy of 1%. The device supports a maximum cathode current of 100 mA 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 is designed for applications requiring stability with any capacitor load.
Feature Summary
- All-capacitor stability ensures reliable operation without specific output capacitance requirements.
- Precision adjustable reference capability allows flexible voltage setting via external resistors.
- Extended industrial temperature rating supports harsh operating environments.
Applications
- Portable equipment power management
- DC-to-DC converter feedback loops
- Battery-powered instrumentation
Procurement Notes
Verify the complete part number including suffixes to ensure correct packaging and specifications. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check for recent Product Change Notifications regarding package or marking updates. Ensure supply chain sources are authorized distributors to guarantee component authenticity and traceability.
Selection Notes
Select this component when full capacitor stability is required alongside high precision. Compare against standard TL431 variants if automotive qualification or specific temperature ranges are necessary. Evaluate the SOT-23-3 footprint constraints against available board space. Consider the 100 mA cathode current limit for load requirements.
Part Context
This device belongs to the TLA43x family of all-capacitor stable references. It serves as a specialized alternative to traditional shunt regulators that require minimum capacitive loads. The TLA431 variant offers 1% accuracy, distinguishing it from higher precision models like the TLA431LI.
Replacement Considerations
Direct functional substitutes include the TLA432AQDBZR for dual-reference needs. Standard equivalents like the TL431AQDBZR may lack all-capacitor stability features. Verify pinout compatibility before substituting with non-TI components.
