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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：15 mA
- Operating Temperature：0°C ~ 70°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 TL431LIACDBZR is a programmable shunt regulator from the Texas Instruments TL431LI series, housed in a SOT-23-3 surface-mount package. It features an adjustable output voltage range of 2.495V to 36V with an initial accuracy of ±1%. The device operates with a maximum shunt current of 100mA and maintains a low reference current. It supports a wide operating temperature range from -40°C to +125°C and exhibits a temperature coefficient of 92 ppm/°C. The component accepts a maximum input voltage of 36V.
Feature Summary
- Provides precise programmable shunt regulation with optimized reference current characteristics for stable performance.
- Delivers high initial accuracy of ±1% across the full adjustable voltage range.
- Engineered for extended industrial reliability with operation up to +125°C junction temperature.
Applications
- Precision voltage references in power supply circuits
- Programmable shunt regulators in battery management systems
- Feedback control loops in DC-DC converters
Procurement Notes
Verify the specific suffix DBZR corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the ±1% accuracy grade meets the design tolerance requirements. Ensure the SOT-23-3 footprint matches the PCB layout specifications. Validate thermal management capabilities for the intended operating environment.
Selection Notes
Select this component when a compact SOT-23-3 form factor is required alongside high precision. The TL431LI variant offers optimized reference current compared to standard versions. Consider the -40°C to +125°C range for industrial applications. Verify compatibility with existing feedback network resistor values for the desired output voltage setting.
Part Context
This part belongs to the TL431LI family, which focuses on programmable shunt regulation with improved reference current optimization. It serves as a direct replacement for legacy TL431 devices where space constraints and higher precision are critical. The SOT-23-3 package enables significant board area reduction compared to traditional through-hole options.
Replacement Considerations
Compatible substitutes include TL431AIDBZR and TL431AQDBZR within the same manufacturer portfolio. Cross-manufacturer equivalents such as LM431 or KA431 may require verification of pinout and electrical parameter alignment.
