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Product Detailed Parameters
- Description：IC REG LINEAR ADJ SHUNT REG
- Series：*
- Mfr：Sipex
- Package：Bulk
- Output Type：-
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SPX431LS-L is a precision adjustable shunt voltage regulator manufactured by MaxLinear (formerly Sipex). It provides a highly accurate bandgap reference with an initial accuracy of 1% and a temperature coefficient of 30 PPM/C. The device operates within a junction temperature range of 0°C to +105°C and features a maximum shunt current of 100 mA. It is housed in a SOT-89 surface-mount package and is classified under PMIC - Power Management ICs.
Feature Summary
- Provides a highly accurate bandgap reference for stable voltage regulation
- Functions as an open-loop error amplifier for precise control
- Supports adjustable output voltage configuration via external resistors
Applications
- Precision power supply regulation
- Battery-operated equipment requiring low quiescent current
- Portable instrumentation reference sources
Procurement Notes
Verify component authenticity due to manufacturer transitions from Sipex to MaxLinear. Confirm RoHS compliance status through official documentation. Check for moisture sensitivity handling requirements during storage and assembly. Ensure the specific suffix matches the required packaging and lead-free specifications for your manufacturing process.
Selection Notes
Select this component when a low-cost, high-accuracy shunt regulator is required for space-constrained designs. The SOT-89 package offers a compact solution for surface-mount applications. Consider the 100 mA maximum shunt current capability when designing load conditions. Verify that the 30 PPM/C temperature coefficient meets the thermal stability requirements of the target application environment.
Part Context
This part belongs to the SPX431L series of adjustable shunt regulators. Originally developed by Sipex Corporation, the product line was acquired by MaxLinear. The series is designed to replace standard Zener diodes in voltage reference applications, offering superior accuracy and lower temperature drift characteristics compared to traditional discrete solutions.
Replacement Considerations
Direct substitutes include the SPX431LM1-L and SPX431LN/TR. Verify pinout compatibility and electrical parameter alignment before substitution. Note that some variants may differ in packaging or humidity sensitivity classification.
