SPX2941

1A Low Dropout Voltage Regulator

Overview

Information 1A Low Dropout Voltage Regulator
Package TO263-5
VOUT (V) Adj
VOUT Adj MIN (V) 1.24
VOUT Adj MAX (V) 15.45
IQ (µA) 12000
VIN MIN (V) 3
VIN MAX (V) 16
Features Enable,Reverse battery protection,Current limit and thermal protection
Junction Temp Range (°C) -40 to 125
IOUT (mA) 1000
Accuracy (%) 3%
Output Option Adjustable
Vdrop (mV) 280
Output Noise (µVRMS) 260
PSRR (dB) -
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The SPX2941 is a 1A, accurate voltage regulator 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 SPX2941 is offered in 5-pin TO-220 and TO-263 packages. For a 3A version, refer to the SPX29300 datasheet.

  • Adjustable output down to 1.25V
  • Low quiescent current
  • Guaranteed 1.5A peak output current
  • Low dropout voltage of 280mV @ 1A
  • Extremely tight load and line regulation
  • Extremely fast transient response
  • Reverse battery protection
  • Internal thermal and current limit protection
  • Zero current shutdown
  • Standard TO-220 and TO-263 packages

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets SPX2941 1A Low Dropout Voltage Regulator Adjustable Output, Fast Response 1.0.0 October 2006 892.7 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 SPX2941T5-L/TR CAD File (.bxl) September 2018 18.5 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SPX2941T5-L/TR N Y Y Y Y L3 / 245ᵒC TO-263-5

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement Buy Now Order Samples PDN
SPX2941T5 TO-263-5 -40 125 OBS SPX2941T5-L
SPX2941T5/TR TO-263-5 -40 125 OBS T5-L/TR
SPX2941T5-L TO-263-5 -40 125 OBS SPX2941T5-L/TR
SPX2941T5-L/TR TO-263-5 -40 125 Active Order
SPX2941U5 TO-220-5 -40 125 OBS
SPX2941U5-L TO-220-5 -40 125 OBS
Show obsolete parts
Part Status Legend
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 PDF
TO-220-5
  • JEDEC Reference: TS-001
  • MSL Pb-Free: n/a
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 29.3ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: n/a
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): n/a
  • Tape & Reel Unit Orientation: n/a
  • Dimensions: inch
  • Length: 0.370 max
  • Width: 0.415 max
  • Thickness: 0.190 max
  • Lead Pitch: 0.067
TO-263-5
  • JEDEC Reference: TO-263
  • MSL Pb-Free: L3 @ 245ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 31.2ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 500
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 24 x 16
  • Tape & Reel Unit Orientation: Tab away from sprocket hole.
  • Dimensions: inch
  • Length: 0.380 max
  • Width: 0.420 max
  • Thickness: 0.190
  • Lead Pitch: 0.067

Notifications

Distribution Date Description File
08/16/2016 Addition of an alternate qualified location, JCET.
07/26/2016 Product discontinuation notification. Discontinued.
12/22/2015 Alternate assembly site Addition of an alternate assembly supplier Nantong Fujitsu (China).
09/10/2008 Notice of Obsolescence –Selected Power Management Parts This is notification that the Power Management products listed on the attached page have been discontinued by Exar Corporation due to low market demand, effective immediately.
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.
06/26/2006 Removed reference to error flag; removed reference to “replacement for LM2941” and any other devices. Enable is active high, opposite to competitors’ parts.
02/02/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication facility to wafer foundary BCD. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site

FAQs & Support

Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.

Submit a Technical Support Question As a New Question

Yes. Try our Excel-based heat calculation spreadsheet ANP-03, Thermal Calculator
 
For further study, this spreadsheet is mentioned in the following helpful application note: ANP-02, Thermal Considerations for Linear Regulators 
  

The best way to determine this is to go to maxlinear.com and type the part into the search function. At or near the top of the results you should see something that looks like:
 
 
 

In this example, we looked for XRA1201. Click on part number header or on the link at the bottom of the result.  This brings you to the product page. For example:

 
 
 

Click on Parts & Purchasing, highlighted with the blue arrow above. The screen changes to:

 
 
 

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:

 
 
 

Another method to find out if a part is OBS or EOL is to click on SUPPORT at the top:

 
 
 

And then Product Change Notifications:

 
  
 

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.