Overview
| Information | 3A Ultra Low Dropout Voltage Regulator |
|---|---|
| Package | TO263-5 |
| VOUT (V) | Adj |
| VOUT Adj MIN (V) | 1.25 |
| VOUT Adj MAX (V) | 6 |
| IQ (µA) | 5000 |
| VIN MIN (V) | 1.8 |
| VIN MAX (V) | 5.5 |
| Features | Enable,Remote sense,Current limit and thermal protection |
| Junction Temp Range (°C) | 0 to 125 |
| IOUT (mA) | 3000 |
| Accuracy (%) | 2% |
| Output Option | Adjustable |
| Vdrop (mV) | 400 |
| Output Noise (µVRMS) | - |
| PSRR (dB) | 80 |
The SPX1582 is a 3A low dropout regulator with extremely low dropout voltage. The adjustable version requires only two external resistors to set the output voltage. The fixed version has a preset output of 3.3V, 2.8V or 2.5V and does not require any external resistors. The SPX1582 features a low dropout of 400mV (Typ.) and offers fast transient response. This device is suitable for Pentium applications requiring 2.8V, 2.5V from 3.3V ATX power supplies, where low current input voltage 1V greater than the output voltage is needed. With an external sense pin the load regulation is less than 1mV. This device is an excellent choice for use in powering low voltage microprocessors that require a lower dropout, fast transient response to regulate from 3.3V and 5V supplies. The SPX1582 is also an excellent choice as a post regulator for switching supply applications.
The SPX1582 offers protection against overcurrent faults, reversed input polarity, over temperature operation and positive or negative transient voltages.
The SPX1582 is offered in a 5-pin TO-220 and TO-263 compatible with industry standard 5-terminal regulators. For 5A, 3A and 1.5A ultra-low dropout versions refer to SPX1581, SPX1582 and SPX1583 datasheets respectively.
- Low dropout voltage 500mV at 3A full load current
- Adjustable ouput down to 1.25V from ATX power supply
- Extremely tight load and line regulation
- Standard 5-terminal low cost TO263
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | SPX1582 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed | 1.0.0 | January 2007 | 205.1 KB |
| Application Notes | AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian | April 2019 | 1.2 MB | |
| Product Brochures | Power Management Brochure | October 2020 | 2.4 MB | |
| Symbols & Footprints | SPX1582T5-L/TR CAD File (.bxl) | September 2018 | 18.5 KB |
Quality & RoHS
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | Buy Now | Order Samples | PDN |
|---|---|---|---|---|---|---|---|---|
| SPX1582HT5-L | TO-263-5 | 0 | 125 | OBS | ||||
| SPX1582HT5-L/TR | TO-263-5 | 0 | 125 | OBS | ||||
| SPX1582T5 | TO-263-5 | 0 | 125 | OBS | ||||
| SPX1582T5/TR | TO-263-5 | 0 | 125 | OBS | ||||
| SPX1582T5-1-5 | TO-263-5 | OBS | ||||||
| SPX1582T5-1-8 | TO-263-5 | OBS | ||||||
| SPX1582T5-2-5 | TO-263-5 | OBS | ||||||
| SPX1582T5-2-5/TR | TO-263-5 | OBS | ||||||
| SPX1582T5-2-8 | TO-263-5 | OBS | ||||||
| SPX1582T5-2-8/TR | TO-263-5 | OBS | ||||||
| SPX1582T5-2-85 | TO-263-5 | OBS | ||||||
| SPX1582T5-2-85/TR | TO-263-5 | OBS | ||||||
| SPX1582T5-3-3 | TO-263-5 | 0 | 125 | OBS | ||||
| SPX1582T5-3-3/TR | TO-263-5 | OBS | ||||||
| SPX1582T5-5-0 | TO-263-5 | OBS | ||||||
| SPX1582T5-5-0/TR | TO-263-5 | OBS | ||||||
| SPX1582T5-L | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582T5-L/TR | TO-263-5 | 0 | 125 | Active | Order | |||
| SPX1582T5-L-1-5 | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L | |||
| SPX1582T5-L-1-5/TR | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582T5-L-1-8 | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L | |||
| SPX1582T5-L-1-8/TR | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582T5-L-2-5 | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L-2-5/TR | |||
| SPX1582T5-L-2-5/TR | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582T5-L-2-8 | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L | |||
| SPX1582T5-L-2-8/TR | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582T5-L-2-85 | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L | |||
| SPX1582T5-L-2-85/TR | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582T5-L-3-0 | TO-263-5 | 0 | 125 | OBS | ||||
| SPX1582T5-L-3-0/TR | TO-263-5 | 0 | 125 | OBS | ||||
| SPX1582T5-L-3-3 | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L | |||
| SPX1582T5-L-3-3/TR | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582T5-L-5-0 | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L | |||
| SPX1582T5-L-5-0/TR | TO-263-5 | 0 | 125 | OBS | SPX1582T5-L/TR | |||
| SPX1582U5 | TO-220-5 | 0 | 125 | OBS | ||||
| SPX1582U5-1-5 | TO-220-5 | OBS | ||||||
| SPX1582U5-1-8 | TO-220-5 | OBS | ||||||
| SPX1582U5-2-5 | TO-220-5 | OBS | ||||||
| SPX1582U5-2-8 | TO-220-5 | OBS | ||||||
| SPX1582U5-2-8/TR | TO-220-5 | 0 | 125 | OBS | ||||
| SPX1582U5-2-85 | TO-220-5 | OBS | ||||||
| SPX1582U5-2-85/TR | TO-220-5 | 0 | 125 | OBS | ||||
| SPX1582U5-3-3 | TO-220-5 | OBS | ||||||
| SPX1582U5-5-0 | TO-220-5 | OBS | ||||||
| SPX1582U5-5-0/TR | TO-220-5 | 0 | 125 | OBS | ||||
| SPX1582U5-L | TO-220-5 | OBS | ||||||
| SPX1582U5-L-1-5 | TO-220-5 | OBS | ||||||
| SPX1582U5-L-1-8 | TO-220-5 | OBS | ||||||
| SPX1582U5-L-2-5 | TO-220-5 | 0 | 125 | OBS | ||||
| SPX1582U5-L-2-8 | TO-220-5 | OBS | ||||||
| SPX1582U5-L-2-85 | TO-220-5 | OBS | ||||||
| SPX1582U5-L-3-0 | TO-220-5 | 0 | 125 | OBS | ||||
| SPX1582U5-L-3-3 | TO-220-5 | OBS | ||||||
| SPX1582U5-L-5-0 | TO-220-5 | OBS | ||||||
| SPX1582UT-L-5-0 | TO-220-5 | 0 | 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.
Packaging
Notifications
FAQs & Support
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Notice the status column and the “Show obsolete parts” link. A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers, the legend still present:
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Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:
If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.