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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% 4X2SON
- 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：4-XDFN Exposed Pad
- Supplier Device Package：4-X2SON (1x1)
- Grade：-
- Qualification：-
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Overview
The ATL431LIAIDQNR is a low-quiescent current programmable shunt regulator from the Texas Instruments ATL431LI series. 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 functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in an X2SON-4 surface-mount package.
Feature Summary
- Provides adjustable precision voltage reference functionality via a two-terminal shunt architecture
- Maintains high accuracy with 1% initial tolerance over the specified operating temperature range
- Designed for low power consumption with minimal quiescent current requirements
Applications
- Precision voltage reference circuits requiring adjustable output levels
- Power management systems utilizing shunt regulation topologies
- Industrial control applications demanding wide temperature stability
Procurement Notes
Verify the specific suffix 'DQNR' against the official Texas Instruments datasheet to confirm the X2SON-4 package configuration and reel packaging details. Ensure the part number matches the required automotive or industrial grade specifications defined in the ATL431LI family documentation before procurement.
Selection Notes
Select this component when a compact surface-mount solution is required for precise shunt regulation. The X2SON-4 package offers space efficiency compared to traditional packages. Consider the 1% accuracy and 66 ppm/°C temperature coefficient for applications where thermal stability and initial precision are critical design constraints.
Part Context
This part belongs to the ATL431LI family, which represents Texas Instruments' advanced line of programmable shunt regulators. The family integrates improvements in bandwidth and noise performance while maintaining compatibility with legacy TL431 pinouts. The ATL431LI series is designed to replace older generation references in modern power supply designs.
Replacement Considerations
Direct replacements include ATL431LIBIDQNR for higher 0.5% accuracy or ATL431LIAIDBZR for SOT-23-3 packaging compatibility. Verify pinout compatibility and electrical parameter overlaps before substituting.
