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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% 8SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- 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 TL431BCDR2G is a programmable precision shunt regulator from onsemi, part of the TL431 series. It operates as a three-terminal voltage reference with an adjustable output range from Vref to 36 V using two external resistors. The device features a typical initial accuracy of ±0.4% at 25°C and a low dynamic output impedance of 0.22 Ω. It supports a sink current capability ranging from 1.0 mA to 100 mA. The component is housed in an 8-pin SOIC surface-mount package and is designed for operation across a temperature range of 0°C to 70°C.
Feature Summary
- Programmable output voltage adjustable from Vref to 36 V via external resistors
- High initial accuracy with ±0.4% tolerance typical at 25°C
- Low dynamic output impedance of 0.22 Ω typical
- Temperature compensated for full rated operating temperature range
Applications
- Digital voltmeters
- Power supplies
- Op amp circuitry
Procurement Notes
Verify the complete part number includes the suffix 'G', indicating lead-free and RoHS compliance. Confirm the specific suffix matches the required package and tape/reel configuration. Ensure the automotive prefix requirements are met if AEC-Q100 qualification is necessary for the target application.
Selection Notes
Select this component when a stable, adjustable voltage reference is needed with high precision. The ±0.4% accuracy makes it suitable for applications requiring tight voltage regulation. Consider the 8-pin SOIC package for surface-mount assembly constraints and verify the operating temperature range meets the environmental requirements.
Part Context
The TL431BCDR2G belongs to the TL431 family of programmable shunt regulators. These devices serve as monolithic IC voltage references, offering a low-temperature coefficient alternative to traditional Zener diodes. The 'B' designation indicates the tighter ±0.4% accuracy grade compared to standard variants.
Replacement Considerations
Compatible substitutes include TL431AIDR2G and TL431ACDR2G. Verify that replacement parts match the required accuracy grade and package type. Ensure pinout compatibility and electrical specifications align with the original design requirements.
