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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% 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：100 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 TL431CDBZR is an adjustable precision shunt regulator manufactured by Texas Instruments, housed in a SOT-23-3 surface-mount package. It provides an adjustable output voltage range from 2.495 V to 36 V with an initial accuracy of 1%. The device operates with a maximum cathode current of 100 mA and a minimum reference current of 1 mA. It functions within a temperature range of -40°C to +85°C and features a typical temperature coefficient of 63 PPM/°C.
Feature Summary
- Provides programmable shunt regulation with optimized reference current characteristics for stable operation.
- Delivers high precision voltage referencing with tight initial accuracy tolerances across the operating range.
- Supports wide input voltage capabilities up to 36 V while maintaining low dynamic impedance.
Applications
- Precision voltage references in power supply circuits
- Programmable linear regulators and feedback loops
- Battery charging management systems
Procurement Notes
Verify the specific suffix 'C' indicates the 1% accuracy grade and 'DBZR' denotes the SOT-23-3 tape-and-reel packaging configuration. Confirm that the -40°C to +85°C industrial temperature rating aligns with system requirements. Ensure compatibility with RoHS3 standards as documented in the official datasheet before finalizing procurement specifications.
Selection Notes
Select this component when a compact SOT-23-3 footprint is required alongside 1% initial accuracy. It is suitable for applications needing adjustable regulation up to 36 V with moderate current handling. Compare against higher accuracy grades if tighter tolerance is necessary, or consider alternative packages if board space permits larger footprints for improved thermal performance.
Part Context
This part belongs to the TL431 family of programmable shunt regulators, widely used as voltage references and error amplifiers. The TL431 series serves as a standard solution for replacing Zener diodes in feedback networks, offering superior temperature stability and lower dynamic impedance compared to traditional discrete components.
Replacement Considerations
Direct pin-compatible substitutes include TL431ACDBZR (1% accuracy) and TL431BCDBZR (0.5% accuracy). Verify that the replacement maintains the same SOT-23-3 package and electrical characteristics such as maximum cathode current and operating temperature range.
