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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% 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：-40°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 TL431IDR is an adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 2.495 V to 36 V and features an initial accuracy of 2%. The device supports a maximum cathode current of 100 mA with a minimum operating current of 600 µA. It utilizes an SOIC-8 surface-mount package and functions across a temperature range of -40°C to +125°C.
Feature Summary
- Provides stable reference voltage for feedback control loops
- Enables precise output voltage regulation via external resistors
- Supports low-cost implementation in switching power supplies
Applications
- Switching power supply feedback networks
- Linear power supply regulation circuits
- Voltage monitoring systems
- Comparator applications requiring precise thresholds
Procurement Notes
Verify the specific suffix 'IDR' against official Texas Instruments documentation to confirm the SOIC-8 package, 2% accuracy grade, and industrial temperature range specifications. Ensure compatibility with RoHS3 requirements and check for any recent Product Change Notifications affecting assembly or fabrication sites before finalizing procurement decisions.
Selection Notes
Select this component when a wide adjustable voltage range up to 36 V is required alongside high thermal stability. The industrial temperature rating makes it suitable for demanding environments where standard commercial grades may fail. Consider the 100 mA sink capability for driving optocouplers directly in isolated converter designs.
Part Context
This part belongs to the TL431 family of three-terminal adjustable shunt regulators. It serves as a versatile alternative to fixed voltage references, offering programmable output through external resistor dividers. The device integrates a bandgap reference and error amplifier on a single die.
Replacement Considerations
Check for direct equivalents such as TL431CDR or TL431QDR from Texas Instruments, ensuring identical pinout and electrical characteristics. Verify that substitute parts meet the same SOIC-8 package dimensions and temperature ratings.
