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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% 8SOIC
- 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：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TL431BCDR is an adjustable precision shunt regulator manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. It provides a reference voltage range from 2.495 V to 36 V with an initial accuracy of ±0.5%. The device supports a maximum cathode current of 100 mA and operates within a temperature range of 0°C to 70°C. Key electrical characteristics include a maximum input voltage of 36 V and a temperature coefficient of 92 ppm/°C.
Feature Summary
- Provides precise adjustable voltage regulation via external resistor divider
- Ensures thermal stability across the specified operating temperature range
- Features low dynamic output impedance for stable performance
Applications
- Precision power supply voltage references
- On-line differential analog-to-digital converters
- Programmable output circuits
Procurement Notes
Verify the specific suffix 'B' indicates the ±0.5% accuracy grade and 'CDR' denotes the SOIC-8 tape-and-reel packaging. Confirm RoHS compliance status and ensure the operating temperature range aligns with system requirements. Cross-reference the manufacturer part number against official datasheets to validate pinout and electrical specifications before integration.
Selection Notes
Select this component when high accuracy (±0.5%) is required compared to standard variants. Ensure the application voltage does not exceed the 36 V maximum rating. Consider the SOIC-8 package dimensions for PCB layout constraints. Verify that the 100 mA cathode current capability meets the load requirements of the shunt regulator circuit design.
Part Context
This device belongs to the TL431 family of programmable shunt regulators. It serves as a direct replacement for similar Zener diodes in many applications, offering superior temperature stability and lower dynamic impedance. The component is widely used in industrial and consumer electronics for voltage regulation tasks requiring reliable precision.
Replacement Considerations
Compatible substitutes include TL431ACDR and TL431IDR, which offer different accuracy grades. Ensure the replacement maintains the same SOIC-8 package and electrical ratings.
