ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
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：-
Download product information
Overview
The SPX431LCS-L is a three-terminal adjustable shunt voltage regulator manufactured by Sipex. It provides a highly accurate bandgap reference with an initial accuracy of 0.5%. The device operates as an open-loop error amplifier, allowing the output voltage to be adjusted from 2.495V to 20V using two external resistors. It features a nominal reference voltage of 2.495V and supports a maximum shunt current of 150mA. The component is housed in an SOT-89-3 package and is designed for operation within a temperature range of -40°C to +125°C.
Feature Summary
- Provides a highly accurate 0.5% bandgap reference for stable voltage regulation
- Functions as a three-terminal adjustable shunt regulator with open-loop error amplification
- Allows output voltage adjustment via two external resistors
Applications
- Precision voltage references in power supply circuits
- Open-loop error amplifiers in feedback loops
- Programmable zener diode applications
Procurement Notes
Verify the specific manufacturer source, as production rights for Sipex components have transitioned to MaxLinear. Confirm the exact suffix designation matches the required package and compliance specifications. Check current availability status, as older Sipex part numbers may be discontinued or subject to limited supply constraints depending on the distributor channel.
Selection Notes
Select this component when a precise, adjustable shunt reference is required in compact surface-mount designs. Ensure the external resistor network supports the desired output voltage within the 2.495V to 20V range. Verify that the thermal performance of the SOT-89-3 package meets the application's dissipation requirements under maximum load conditions.
Part Context
The SPX431 series belongs to a family of precision shunt regulators derived from the standard TL431 architecture but optimized for specific performance metrics like initial accuracy and temperature stability. Sipex was a prominent manufacturer of such analog ICs before its acquisition by MaxLinear, which now manages the product line and associated documentation.
Replacement Considerations
Direct equivalents include the TL431A and LM431BIM3-NOPB. Verify pinout compatibility and electrical tolerances against the original design requirements before substitution.
