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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT23-3
- 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：15 mA
- Operating Temperature：-40°C ~ 85°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 TL431LIBIDBZR is a three-terminal adjustable shunt regulator from the ATL43x series by Texas Instruments. It operates within a voltage range of 2.5V to 36V and features an initial accuracy of ±0.5%. The device supports a maximum cathode current of 100µA and delivers an output current of 15mA. Packaged in a surface-mount SOT-23-3 format, it functions as a precision reference with low output impedance. The component is rated for an operating temperature range of -40°C to +85°C.
Feature Summary
- Provides precise voltage regulation through external resistor adjustment
- Features low output impedance for stable performance
- Offers high thermal stability across specified temperature ranges
Applications
- Board-level voltage regulation
- Adjustable power supply circuits
- Switching power supply feedback loops
Procurement Notes
Verify the specific suffix 'LI' indicates automotive-grade qualification or specific lot traceability requirements distinct from standard commercial variants. Confirm the SOT-23-3 package dimensions match the design footprint. Ensure the ±0.5% tolerance meets the circuit's precision needs compared to lower-cost alternatives.
Selection Notes
Select this part when higher initial accuracy than standard TL431 variants is required. The low cathode current specification suits applications where minimizing quiescent power consumption is critical. Verify that the 15mA output current capability aligns with the load requirements of the target circuit design.
Part Context
This component belongs to the ATL43x family, which are low-current adjustable shunt regulators. Unlike the standard TL431, the ATL431 variant is optimized for lower cathode current operation while maintaining similar functional characteristics. It serves as a drop-in replacement for many TL431 applications requiring tighter tolerance specifications.
Replacement Considerations
The ATL431LIBIDBZR shares functional compatibility with the TL431LIBQDBZR, differing primarily in qualification grade. Standard TL431AIDBZR units may replace this part if the ±1% tolerance is acceptable and automotive qualification is not required.
