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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% 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 ~ 125°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 ATL431LIBQDQNR is a low-quiescent current programmable shunt regulator manufactured by Texas Instruments. It operates within an output voltage range of 2.5 V to 36 V and features an initial accuracy of 0.5%. The device exhibits 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 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 external resistor divider
- Maintains stable regulation with low quiescent current consumption
- Ensures high accuracy performance suitable for sensitive analog circuits
Applications
- Precision voltage references in power supply feedback loops
- Programmable output voltage control in DC-DC converters
- Battery monitoring systems requiring accurate threshold detection
Procurement Notes
Verify the specific suffix QDQNR corresponds to the X2SON-4 package and automotive-grade qualification when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the ordering part number matches the required tolerance and temperature rating specifications for the target application environment.
Selection Notes
Select this component when high accuracy and low standby current are critical requirements. The X2SON-4 package offers a compact footprint for space-constrained designs. Consider the 0.5% initial accuracy and 66 ppm/°C temperature coefficient for applications demanding tight voltage stability over varying thermal conditions.
Part Context
This device belongs to the ATL431LI series, representing an advanced iteration of programmable shunt regulators. It integrates industry-standard functionality with improved electrical characteristics and smaller form factors. The series is designed to replace legacy components while offering enhanced performance metrics for modern electronic systems.
Replacement Considerations
Direct pin-compatible alternatives include the ATL431LIAQDQNR, which shares the same package but differs in initial accuracy specifications. Verify functional equivalence and parameter alignment before substituting other TL431 family members.
