3A Low Dropout Voltage Regulator


Information 3A Low Dropout Voltage Regulator
Package TO263-5
VOUT (V) Adj
VOUT Adj MIN (V) 1.25
VOUT Adj MAX (V) 16
IQ (µA) 40000
VIN MIN (V) 2.25
VIN MAX (V) 16
Features Enable,Current limit and thermal protection,Reverse battery protection
Junction Temp Range (°C) -40 to 125
IOUT (mA) 3000
Accuracy (%) 1%
Output Option Adjustable
Vdrop (mV) 600
Output Noise (µVRMS) 260
PSRR (dB) -
Show more

The XRP29302 is a 3A, highly accurate voltage regulator with a low dropout voltage of 600mV (typical) at 3A.

This regulator is specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. It is fully fault protected against overcurrent, reverse battery, and positive and negative voltage transients. On-chip trimming adjusts the reference voltage to 1% initial accuracy.

The XRP29302 is offered in 5-pin TO220 and TO263 packages.

  • 3A guaranteed output current
  • Low dropout voltage of 600mV @ 3A
  • Adjustable output down to 1.25V
  • 1% output accuracy
  • Tight load and line regulation
  • Fast transient response
  • Reverse battery protection
  • Zero current shutdown
  • Drop-in replacement to SPX29302
  • Lead free 5-pin TO220 and TO263 Packages

  • Adjustable power supplies
  • Constant current regulators
  • Audio and video/graphic cards
  • Battery chargers

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XRP29302 3A Low Dropout Voltage Regulator 1.4.2 July 2021 627 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 XRP29302ETBTR-L CAD File (.bxl) September 2018 18.5 KB
Register for a myMxL account or Login to myMxL to view all Technical Documentation & Design Tools.

Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
XRP29302ETBTR-L N Y Y Y Y L3 / 245ᵒC TO-263-5
XRP29302AETBTR-L 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
XRP29302AETB-L TO-263-5 -40 125 OBS XRP29302AETBTR-L
XRP29302AETBTR-L TO-263-5 -40 125 Active Order
XRP29302ETB-L TO-263-5 -40 125 OBS XRP29302ETBTR-L
XRP29302ETBTR-L TO-263-5 -40 125 Active Order
XRP29302ET-L TO-220-5 -40 125 OBS XRP29302ETBTR-L
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.


Pkg Code Details Quantities Dimensions PDF
  • 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
  • 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


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).
05/09/2011 Revised two mask layers. To improve the manufacturing control margin.

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

The reason for R2 value being a minimum of 10kOhms is to prevent an unwanted latch up condition if the ADJ pin is exposed to high levels of current. Please keep in mind that a minimum output load current of 5mA is still required for maintaining regulation.

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.