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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% 8SO
- 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 (0.209", 5.30mm Width)
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The TL431ACPSR is an adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within a cathode voltage range of 2.495V to 36V and supports a maximum output current of 100mA. The device features an initial accuracy of ±1% and a maximum temperature coefficient of 92ppm/°C. Designed for surface mount applications, it is housed in an 8-pin Small Outline Package (SOP) with tape and reel packaging. The component functions as a programmable parallel regulator, allowing precise voltage control across its operating range.
Feature Summary
- Provides adjustable voltage regulation via external resistor network
- Ensures stable reference performance with low temperature drift
- Supports high cathode current capability for diverse load requirements
Applications
- Precision power supply regulation circuits
- Portable equipment voltage monitoring systems
- DC-to-DC converter feedback loops
Procurement Notes
Verify the specific suffix 'SR' indicates tape and reel packaging configuration. Confirm the SOP-8 package dimensions match your PCB footprint requirements. Ensure the ±1% accuracy grade meets your circuit tolerance specifications. Check that the 0°C to 70°C industrial temperature range aligns with your operational environment constraints before finalizing procurement.
Selection Notes
Select this component when a surface-mount adjustable shunt reference is required. The 8-pin SOP package offers space efficiency compared to through-hole alternatives. Consider the 100mA current limit for load driving capabilities. Verify compatibility with existing PCB layouts designed for SOP-8 footprints. Evaluate thermal management needs within the specified industrial temperature range.
Part Context
This part belongs to the TL431 family of programmable shunt regulators. It serves as a direct replacement for legacy Zener diodes in many reference applications. The series is widely used in industrial and consumer electronics for voltage regulation. Texas Instruments maintains this component as an active product for general-purpose use.
Replacement Considerations
Compatible substitutes include LM431ACPSR and TL431ACDR. Verify pinout compatibility and package dimensions before substitution. Ensure electrical parameters such as accuracy and temperature coefficient meet original design requirements.
