SPX1585

5A Low Dropout Voltage Regulator
Data Sheet

Description

The SPX1585 is a low power 5A, adjustable and fixed voltage regulator that is very easy to use. It requires only two external resistors to set the output voltage for the adjustable version. The SPX1585 devices are designed for low voltage applications that offer lower dropout voltage and faster transient response. This device is an excellent choice for use in powering low voltage microprocessors that require a lower dropout, faster transient response to regulate from +2.5V to 3.8V supplies and as a post regulator for switching supplies applications. The SPX1585 features low dropout of a maximum 1.2 volts.

The SPX1585 offers full protection against overcurrent faults, reversed input polarity, reversed load insertion and positive and negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. The IQ of this device flows into the load, which increases efficiency. The SPX1585 devices are offered in a 3-pin TO-220 and TO-263 package compatible with other 3-terminal regulators. For an 8A low dropout regulator, refer to the SPX1584 datasheet.

Features

  • Adjustable output down To 1.2,or fixed 3.3V versions
  • Output current of 5A
  • Low dropout voltage 1.1V typical @ 5A
  • Extremely tight load and line regulation
  • Current and thermal limiting
  • Standard 3-terminal low cost TO263
  • Similar to industry standard LT1085/LT1585

Application

Design Tools

Symbols & Footprints

Packaging

Pkg Code Details Quantities Dimensions PDF
TO-220-3
  • JEDEC Reference: TO-220
  • MSL Pb-Free: n/a
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 29.4ºC/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: 0.355 max
  • Width: 0.420 max
  • Thickness: 0.190 max
  • Lead Pitch: 0.10
TO-263-3
  • JEDEC Reference: TO-263
  • MSL Pb-Free: L3 @ 245ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 31.4ºC/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: 0.10

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SPX1585AT-2-5/TR TO-263-3 OBS
SPX1585AT-3-3 TO-263-3 -45 125 OBS
SPX1585AT-5-0 TO-263-3 OBS
SPX1585AT-5-0/TR TO-263-3 OBS
SPX1585AT-L TO-263-3 -45 125 OBS Suggested:
SPX1585AT-L/TR
SPX1585AT-L/TR TO-263-3 -45 125 Active Order
SPX1585AT-L-1-5 TO-263-3 -45 125 OBS
SPX1585AT-L-1-5/TR TO-263-3 -45 125 OBS
SPX1585AT-L-2-5 TO-263-3 -45 125 OBS Suggested:
SPX1585AT-L
SPX1585AT-L-2-5/TR TO-263-3 -45 125 OBS Suggested:
SPX1585AT-L/TR
SPX1585AT-L-3-3 TO-263-3 -45 125 OBS Suggested:
SPX1585AT-L-3-3/TR
SPX1585AT-L-3-3/TR TO-263-3 -45 125 OBS Suggested:
SPX1587AT-L-3-3/TR
SPX1585AU-1-5 TO-220-3 OBS
SPX1585AU-3-3 TO-220-3 -45 125 OBS
SPX1585AU-5-0 TO-220-3 OBS
SPX1585AU-L TO-220-3 -45 125 OBS Suggested:
SPX1585AT-L
SPX1585AU-L-1-5 TO-220-3 -45 125 OBS
SPX1585AU-L-2-5 TO-220-3 -45 125 OBS Suggested:
SPX1585AT-L
SPX1585AU-L-3-3 TO-220-3 -45 125 OBS Suggested:
SPX1585AT-L
SPX1585AU-L-5-0 TO-220-3 -45 125 OBS Suggested:
SPX1585AT-L
SPX1585T TO-263-3 OBS
SPX1585T/TR TO-263-3 OBS
SPX1585T-1-5 TO-263-3 OBS
SPX1585T-1-5/TR TO-263-3 OBS
SPX1585T-2-5 TO-263-3 OBS
SPX1585T-2-5/TR TO-263-3 OBS
SPX1585T-3-3 TO-263-3 OBS
SPX1585T-3-3/TR TO-263-3 OBS
SPX1585T-5-0 TO-263-3 OBS
SPX1585T-5-0/TR TO-263-3 OBS
SPX1585T-L TO-263-3 -45 125 OBS
SPX1585T-L/TR TO-263-3 OBS
SPX1585T-L-1-5 TO-263-3 -45 125 OBS
SPX1585T-L-1-5/TR TO-263-3 -45 125 OBS
SPX1585T-L-2-5 TO-263-3 OBS
SPX1585T-L-2-5/TR TO-263-3 OBS
SPX1585T-L-3-3 TO-263-3 -45 125 OBS
SPX1585T-L-3-3/TR TO-263-3 OBS
SPX1585U TO-220-3 OBS
SPX1585U-1-5 TO-220-3 OBS
SPX1585U-2-5 TO-220-3 OBS
SPX1585U-3-3 TO-220-3 -45 125 OBS
SPX1585U-5-0 TO-220-3 OBS
SPX1585U-L TO-220-3 -45 125 OBS
SPX1585U-L-1-5 TO-220-3 -45 125 OBS
SPX1585U-L-2-5 TO-220-3 OBS
SPX1585U-L-3-3 TO-220-3 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.

Quality Documents

Part Number RoHS
SPX1585AT-L-3-3/TR Download
SPX1585AT-L/TR Download
Additional Quality Documentation may be available, please contact customersupport@maxlinear.com.
Distribution Date Description File
02/27/2018 Qualification of alternate assembly subcon, JCET.
07/11/2017 Product Discontinuation Notification
07/26/2016 Product discontinuation notification. Discontinued.
02/05/2016 Alternate assembly site. Addition of an alternate assembly supplier Nantong Fujitsu (China)
03/04/2009 Notice of Obsolescence Discontinued by Exar Corporation due to low market demand
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.
06/26/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. 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
02/02/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. 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

Frequently Asked Questions

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 exar.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. When you hover over it, it will turn grey and you can click anywhere in the grey box. This brings you to the product page. For example:

 
 

Click on Parts & Purchasing, highlighted in yellow 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:

 
 

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

 

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.