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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% 8SOP
- Series：-
- Mfr：onsemi
- Package：Tube,Tube
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-25°C ~ 85°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 TL431ACD is a three-terminal adjustable shunt regulator manufactured by onsemi, housed in an 8-SOP surface-mount package. It provides a programmable output voltage ranging from approximately 2.5 V to 36 V using two external resistors. The device features a typical dynamic output impedance of 0.2 Ω and supports a cathode sink current range of 1.0 mA to 100 mA. It includes temperature compensation for operation over the full rated operating temperature range.
Feature Summary
- Programmable output voltage capability up to 36 volts via external resistor divider
- Low dynamic output impedance ensuring stable regulation performance
- Temperature compensated design for reliable operation across the full rated temperature range
Applications
- Shunt regulator circuits
- Output control for three-terminal fixed regulators
- High current shunt regulator designs
- Constant-current sink applications
Procurement Notes
Verify that the specific component matches the 8-SOP package configuration and the 1% tolerance designation. Confirm the manufacturer origin as Fairchild Semiconductor or its successor entities within the onsemi portfolio. Ensure compliance with RoHS standards and verify the absence of halogen or brominated flame retardants if required by the application specifications.
Selection Notes
Select this component when a precision adjustable reference is needed in a compact surface-mount form factor. The 1% tolerance offers higher accuracy than standard variants. Consider the 100 mA continuous sink current limit and the 37 V maximum cathode voltage rating during circuit design to ensure safe operation under all expected load conditions.
Part Context
This part belongs to the TL431/TL431A family of programmable shunt regulators. These devices serve as active replacements for Zener diodes in many applications due to their sharp turn-on characteristics and superior stability. The series is widely used in power supply feedback loops and voltage reference generation.
Replacement Considerations
Compatible substitutes include TL431CLP (TO-92), TL431CP (8-DIP), and TL431CD (8-SOP). Verify pinout compatibility and package dimensions before substitution. Ensure the alternative meets the required 1% output voltage tolerance and operates within the specified temperature range.
