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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2% 8SO
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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 (0.209", 5.30mm Width)
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The TL431CPS is a three-terminal adjustable shunt regulator from Texas Instruments, designed for precision voltage reference applications. It operates within an input voltage range of 2.5 V to 36 V and supports a cathode current up to 100 mA. The device features a typical output impedance of 0.2 Ω and offers initial accuracy of ±2% at 25°C. Packaged in an 8-pin Small Outline Package (SOP), it functions as a versatile replacement for Zener diodes in board-level regulation and switching power supply feedback loops.
Feature Summary
- Provides precise adjustable voltage referencing using two external resistors
- Features low output noise and high stability across temperature ranges
- Offers active output circuitry with defined turn-on characteristics
Applications
- Board-level voltage regulation circuits
- Feedback control loops in switching power supplies
- Adjustable linear and switching power sources
Procurement Notes
Verify the specific suffix against official datasheets to confirm package type and accuracy grade. Ensure the selected variant matches the required operating temperature range and pin configuration for the target PCB layout. Cross-reference part numbers with manufacturer documentation to avoid confusion between similar SOP and DIP variants.
Selection Notes
Select this component when a compact surface-mount solution is required for precision shunt regulation. Consider the 8-pin SOP footprint constraints and thermal dissipation capabilities relative to the expected cathode current load. Verify that the ±2% initial accuracy meets the system's tolerance requirements compared to higher-grade alternatives.
Part Context
This device belongs to the TL431 family of programmable shunt regulators. These components are widely utilized in industrial and commercial electronics for their reliability and cost-effectiveness. The TL431 series establishes a standard for adjustable references, offering flexibility in design through simple resistor divider networks.
Replacement Considerations
Compatible substitutes include the TL431ACPS and TL431BCPS for tighter accuracy grades. For different packages, consider the TL431AIDBVR or TL431QDCKR. Verify pinout compatibility and electrical specifications before substitution.
