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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.21% SOT23-3
- Series：-
- Mfr：STMicroelectronics
- 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 ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The TL431IL3T is an adjustable shunt voltage reference IC manufactured by STMicroelectronics, housed in a SOT-23-3 surface-mount package. It provides a programmable output voltage ranging from 2.495 V to 36 V. The device features a typical cathode current capability of 1 mA and a maximum sink current of 100 mA. Initial accuracy is specified at ±2.21%. It operates within a temperature range of -40°C to +105°C (TA) and complies with RoHS3 standards.
Feature Summary
- Adjustable output voltage set via external resistors
- Guaranteed thermal stability across operating range
- Low power consumption profile
Applications
- Precision voltage regulation circuits
- Programmable power supplies
- Voltage monitoring systems
Procurement Notes
Verify the specific suffix IL3T against the official datasheet to confirm the SOT-23-3 package and ±2.21% tolerance. Ensure the required operating temperature range aligns with the industrial specification of -40°C to +105°C. Confirm that the application circuit supports the minimum cathode current requirements for stable operation.
Selection Notes
Select this component when a compact SOT-23-3 footprint is required for shunt regulation. It serves as a direct replacement for industry-standard TL431 devices where space constraints exist. Consider the ±2.21% initial accuracy limit; tighter tolerances may require alternative precision variants or calibration.
Part Context
This part belongs to the TL431 family of programmable shunt references widely used in switching power supply feedback loops. The IL3T designation specifically indicates the SOT-23-3 surface mount packaging variant produced by STMicroelectronics, offering a balance between performance and board space efficiency.
Replacement Considerations
Compatible substitutes include TS2431 and TS431 from STMicroelectronics, which offer similar shunt reference functionality. Cross-reference pinouts and electrical characteristics carefully to ensure compatibility with existing PCB layouts and circuit designs.
