Overview
| Information | 1A Low Dropout Voltage Regulator |
|---|---|
| Output Option | Fixed |
| VOUT (V) | 5.0 |
| VOUT Adj MIN (V) | - |
| VOUT Adj MAX (V) | - |
| IOUT (mA) | 1000 |
| VIN MIN (V) | 3.2 |
| VIN MAX (V) | 16 |
| IQ (µA) | 12000 |
| Accuracy (%) | 3% |
| Vdrop (mV) | 280 |
| Output Noise (µVRMS) | 260 |
| PSRR (dB) | - |
| Junction Temp Range (°C) | -40 to 125 |
| Package | TO263-3, TO220-3 |
| Features | Reverse battery protection,Current limit and thermal protection |
The SPX2940 is a 1A, accurate voltage regulators with a low drop out voltage of 280mV (typical) at 1A. These regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. They are fully fault protected against overcurrent, reverse battery and positive and negative voltage transients.
The SPX2940 is offered in 3-pin TO-220 and TO-263 packages. For a 3A version, refer to the SPX29300 datasheet.
- Guaranteed 1.5A peak current
- Low quiescent current
- Low dropout voltage of 280mV at 1A
- Extremely tight load and line regulation
- Extremely fast transient response
- Reverse battery protection
- Internal thermal protection
- Internal short circuit current limit
- Replacement for LM2940, MIC2940A, AS2940
- Standard TO-220 and TO-263 packages
- 5.0V fixed output
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | SPX2940 1A Low Dropout Voltage Regulator | 2.0.0 | August 2009 | 610.8 KB |
| Product Brochures | Power Management Brochure | October 2020 | 2.4 MB |
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
|---|---|---|---|---|---|---|
| SPX2940JT-L-5-0 | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940JT-L-5-0/TR | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940JU-L-3-3 | TO-220-3 | -40 | 125 | OBS | ||
| SPX2940T-1-8 | TO-263-3 | OBS | ||||
| SPX2940T-1-8/TR | TO-263-3 | OBS | ||||
| SPX2940T-2-5 | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940T-2-5/TR | TO-263-3 | OBS | ||||
| SPX2940T-3-3 | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940T-3-3/TR | TO-263-3 | OBS | ||||
| SPX2940T-5-0 | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940T-5-0/TR | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940T-L-1-8 | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940T-L-1-8/TR | TO-263-3 | OBS | ||||
| SPX2940T-L-2-5 | TO-263-3 | -40 | 125 | OBS | SPX3940T-L-2-5 | |
| SPX2940T-L-2-5/TR | TO-263-3 | -40 | 125 | OBS | SPX3940T-L-2-5 | |
| SPX2940T-L-3-3 | TO-263-3 | -40 | 125 | OBS | SPX3940T-L-3-3 | |
| SPX2940T-L-3-3/TR | TO-263-3 | -40 | 125 | OBS | SPX3940T-L-3-3 | |
| SPX2940T-L-5-0 | TO-263-3 | -40 | 125 | OBS | ||
| SPX2940T-L-5-0/TR | TO-263-3 | -40 | 125 | OBS | SPX2940U-L-5-0/TR | |
| SPX2940U-1-8 | TO-220-3 | OBS | ||||
| SPX2940U-2-5 | TO-220-3 | OBS | ||||
| SPX2940U-3-3 | TO-220-3 | -40 | 125 | OBS | ||
| SPX2940U-5-0 | TO-220-3 | -40 | 125 | OBS | ||
| SPX2940U-L-1-8 | TO-220-3 | OBS | ||||
| SPX2940U-L-2-5 | TO-220-3 | -40 | 125 | OBS | ||
| SPX2940U-L-3-3 | TO-220-3 | -40 | 125 | OBS | ||
| SPX2940U-L-5-0 | TO-220-3 | -40 | 125 | 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.
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