Overview
Information | Precision Adjustable Shunt Regulator |
---|---|
Reference Voltage | Adjustable, Fixed |
VOUT (V) | - |
VOUT Adj MIN (V) | 2.5 |
VOUT Adj MAX (V) | 20 |
Operating Current (MAX) (mA) | 100 |
Operating Current (MIN) (mA) | 1 |
IQ (µA) | 1000 |
Initial Accuracy (%) | 1 |
IREF (µA) | 0.7 |
Temperature Coefficient (ppm/°C) | 30 |
Temperature Range (°C) | 0 to 105 |
Package | SOT89-3 |
The SPX431L is a 3-terminal adjustable shunt voltage regulator providing a highly accurate bandgap reference. The SPX431L acts as an open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431L’s thermal stability, wide operating current (100mA) and temperature range (0°C to 105°C) makes it suitable for a variety of applications that require a low cost, high performance solution. SPX431L tolerance of 0.5% is proven to be sufficient to overcome all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufacturer's assembly line and contribute a significant cost savings.
The output voltage may be adjusted to any value between VREF and 20V with two external resistors. The SPX431L is available in TO-92, and SOT-89 packages.
- Tight voltage tolerance 0.5% at 10mA
- Wide operating current 1mA to 100mA
- Extended temperature range: 0°C to 105°C
- Low temperature coefficient 30 ppm/°C
- Improved replacement in performance for TL431 and AS431
- Low cost solution
- Battery operating equipment
- Adjustable supplies
- Switching power supplies
- Error amplifiers
- Single supply amplifier
- Monitors / VCRs / TVs
- Personal computers
Documentation & Design Tools
Type | Title | Version | Date | File Size |
---|---|---|---|---|
Data Sheets | SPX431L Precision Adjustable Shunt Regulator | 2.0.1 | July 2013 | 2.5 MB |
Application Notes | AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian | April 2019 | 1.2 MB | |
Product Brochures | Power Management Brochure | May 2024 | 7.1 MB | |
Symbols & Footprints | SPX431LM1-L/TR CAD File (.bxl) | September 2018 | 27.3 KB |
Quality & RoHS
Parts & Purchasing
Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
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SPX431LAM | SOT-23-3 | OBS | ||||
SPX431LAM-L | SOT-23-3 | 0 | 105 | OBS | ||
SPX431LAM-L/TR | SOT-23-3 | 0 | 105 | OBS | ||
SPX431LAM/TR | SOT-23-3 | 0 | 105 | OBS | ||
SPX431LAM1 | SOT-89-3 | OBS | ||||
SPX431LAM1-L | SOT-89-3 | 0 | 105 | OBS | SPX431LM1-L | |
SPX431LAM1-L/TR | SOT-89-3 | 0 | 105 | OBS | SPX431LM1-L/TR | |
SPX431LAM1/TR | SOT-89-3 | OBS | ||||
SPX431LAN | TO-92-3 | OBS | ||||
SPX431LAN-L | TO-92-3 | 0 | 105 | OBS | SPX431LAN-L/TR | |
SPX431LAN-L/TR | TO-92-3 | 0 | 105 | OBS | ||
SPX431LAN/TR | TO-92-3 | 0 | 105 | OBS | ||
SPX431LAS | NSOIC8 | OBS | ||||
SPX431LAS-L | NSOIC8 | 0 | 105 | OBS | ||
SPX431LAS-L/TR | NSOIC8 | OBS | ||||
SPX431LAS/TR | NSOIC8 | OBS | ||||
SPX431LBM5-L | SOT-23-5 | 0 | 105 | OBS | ||
SPX431LBM5-L/TR | SOT-23-5 | 0 | 105 | OBS | ||
SPX431LCM | SOT-23-3 | OBS | ||||
SPX431LCM-L | SOT-23-3 | OBS | ||||
SPX431LCM-L/TR | SOT-23-3 | OBS | ||||
SPX431LCM/TR | SOT-23-3 | OBS | ||||
SPX431LCM1 | SOT-89-3 | OBS | ||||
SPX431LCM1-L | SOT-89-3 | OBS | ||||
SPX431LCM1-L/TR | SOT-89-3 | OBS | ||||
SPX431LCM1/TR | SOT-89-3 | OBS | ||||
SPX431LCN | TO-92-3 | 0 | 105 | OBS | ||
SPX431LCN-L | TO-92-3 | 0 | 105 | OBS | ||
SPX431LCN-L/TR | TO-92-3 | 0 | 105 | OBS | ||
SPX431LCN/TR | TO-92-3 | 0 | 105 | OBS | ||
SPX431LCS | NSOIC8 | OBS | ||||
SPX431LCS-L | NSOIC8 | 0 | 105 | OBS | ||
SPX431LCS-L/TR | NSOIC8 | OBS | ||||
SPX431LCS/TR | NSOIC8 | OBS | ||||
SPX431LJAM1-L | SOT-89-3 | 0 | 105 | OBS | ||
SPX431LJAN-L | TO-92-3 | 0 | 105 | OBS | ||
SPX431LJCN-L | TO-92-3 | 0 | 105 | OBS | ||
SPX431LM | SOT-23-3 | 0 | 105 | OBS | ||
SPX431LM-L | SOT-23-3 | 0 | 105 | OBS | ||
SPX431LM-L/TR | SOT-23-3 | OBS | ||||
SPX431LM/TR | SOT-23-3 | OBS | ||||
SPX431LM1 | SOT-89-3 | OBS | ||||
SPX431LM1-L | SOT-89-3 | 0 | 105 | OBS | SPX431LM1-L/TR | |
SPX431LM1-L/TR | SOT-89-3 | 0 | 105 | OBS | SPX1431M1-L/TR | |
SPX431LM1/TR | SOT-89-3 | 0 | 105 | OBS | ||
SPX431LN | TO-92-3 | OBS | ||||
SPX431LN-L | TO-92-3 | 0 | 105 | OBS | SPX431LN-L/TR | |
SPX431LN-L/TR | TO-92-3 | 0 | 105 | OBS | SPX431AM1-L/TR | |
SPX431LN/TR | TO-92-3 | OBS | ||||
SPX431LS | NSOIC8 | OBS | ||||
SPX431LS-L | NSOIC8 | 0 | 105 | OBS | ||
SPX431LS-L/TR | NSOIC8 | OBS | ||||
SPX431LS/TR | NSOIC8 | OBS |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Packaging
Pkg Code | Details | Quantities | Dimensions |
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NSOIC8 |
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SOT-23-3 |
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SOT-23-5 |
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SOT-89-3 |
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TO-92-3 |
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Notifications
FAQs & Support
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