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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- 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 ATL431LIAIDBZR is a shunt adjustable precision voltage reference manufactured by Texas Instruments. It operates within an output voltage range of 2.5 V to 36 V and provides an initial accuracy of ±1%. The device features a temperature coefficient of 66 ppm/°C and supports a maximum cathode current of 15 mA with a minimum operating current of 80 µA. It is housed in a SOT-23-3 surface-mount package and functions across a temperature range of -40°C to +125°C.
Feature Summary
- Provides high-precision adjustable voltage referencing with ±1% initial accuracy for stable circuit operation.
- Operates over an extended industrial temperature range up to +125°C, suitable for demanding environments.
- Features low quiescent current consumption to support energy-efficient power management designs.
Applications
- Automotive electronic systems requiring robust voltage regulation
- Secondary side regulation in flyback switch-mode power supplies
- Precision voltage monitoring circuits
Procurement Notes
Verify the specific suffix 'Q1' indicates automotive qualification requirements before procurement. Confirm that the SOT-23-3 package dimensions match the target PCB footprint. Ensure the design accounts for the 15 mA maximum cathode current limit during peak load conditions. Cross-reference the datasheet revision date to confirm compliance with current RoHS standards.
Selection Notes
Select this component when automotive-grade reliability and wide temperature operation are required. The ATL431LI series offers improved performance over standard TL431 variants. Consider the 66 ppm/°C temperature coefficient for applications sensitive to thermal drift. Verify that the 2.5 V to 36 V output range covers the system's reference needs.
Part Context
This part belongs to the ATL431LI family of programmable shunt regulators designed for automotive applications. It serves as a high-performance alternative to legacy TL431 devices, offering enhanced stability and wider operating temperature ranges. The LI designation specifically denotes automotive qualification and reliability standards.
Replacement Considerations
The TL431LIAIDBZR is a commercial equivalent but lacks automotive qualification. The ATL431AIDBZR offers similar electrical characteristics without the Q1 automotive grade. Verify pin compatibility and thermal performance when substituting these parts.
