1.5A Ultra-Low Dropout Voltage Regulator


The XR71211 is an ultra-low dropout voltage regulator capable of delivering an output of 1.5Amps. It is differentiated from its competitors by being able to operate from a single supply rail of 1.4V to 2.625V without the need for a noise generating charge pump or secondary bias rail.

This LDO provides a guaranteed dropout voltage of 250mV at maximum junction temperature and is ideal for 1.5V to 1.2V and 1.8V to 1.5V conversions. The output voltage can be set as low as 0.6V with +/-0.5% accuracy making the XR71211 perfectly suited for powering low voltage devices such as FPGAs, DSPs, ASICs and other SOCs.

An enable function, soft-start and power good flag complete the feature set. Built-in current limit, reverse bias and thermal protection ensure safe operation under abnormal operating conditions.

The XR71211 is offered in a RoHS compliant, green/halogen free 10-pin 3 x 3mm DFN package.

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  • 1.5A output current
  • 1.4V to 2.625V single input voltage
    • Adjustable output voltage 0.6V
    • ±0.5 output voltage accuracy (room)
    • ±1.4% output voltage accuracy (temp)
  • Ultra-low dropout voltage
    • 250mV maximum over temperature @ 1.5A
  • Power good flag
  • Enable and soft-start
  • Current limit and thermal protection
  • Reverse bias protection
  • RoHS compliant "Green"/Halogen free
    • 10-pin 3mm x 3mm DFN


Chip Shot

Chip Shot

Quality Reliability

Reliability Report


  • Networking and communications
  • Industrial and medical equipment
  • Enterprise solutions
  • Microprocessors, DSPs, FPGA supplies
  • Switching supplies post regulation

Design Tools


Pkg Code Details Quantities Dimensions PDF
DFN10 3x3 OPT2
  • JEDEC Reference:
  • MSL Pb-Free:
  • MSL SnPb Eutectic:
  • ThetaJA:
  • Bulk Pack Style:
  • Quantity per Bulk Pack:
  • Quantity per Reel:
  • Quantity per Tube:
  • Quantity per Tray:
  • Reel Size (Dia. x Width x Pitch):
  • Tape & Reel Unit Orientation:
  • Dimensions: mm
  • Length: 3.0
  • Width: 3.0
  • Thickness: 0.9
  • Lead Pitch:

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XR71211EH-F DFN10 3x3 OPT2 -40 125 OBS Suggested:
XR71211EHMTR-F DFN10 3x3 OPT2 -40 125 OBS Suggested:
XR71211EHTR-F DFN10 3x3 OPT2 -40 125 OBS Suggested:
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 NumberMDSReL
Additional Quality Documentation may be available, please contact customersupport@maxlinear.com.
Distribution Date Description File
11/09/2017 Product Discontinuation Notice Product Discontinuation Notice 17-1043-01-1033.pdf
07/11/2017 Product Discontinuation Notification Product Discontinuation Notice 17-0623-02 r-1033.pdf
08/21/2014 Design Change. Metal mask changed to improve trim range and yield. There is no change to the product datasheet. PCN_14-0626-01-1033.pdf

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.

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