1.5A Ultra-Low Dropout Voltage Regulator
Data Sheets OBS (Obsolete)


Information 1.5A Ultra Low Dropout Voltage Regulator
Output Option Adjustable
VOUT (V) Adj
VOUT Adj MIN (V) 0.6
VOUT Adj MAX (V) 2.4
IOUT (mA) 1500
VIN MIN (V) 1.4
VIN MAX (V) 2.625
IQ (µA) 3500
Accuracy (%) 0.50%
Vdrop (mV) 130
Output Noise (µVRMS) 200
PSRR (dB) 30
Junction Temp Range (°C) -40 to 125
Package 3x3 DFN-10
Features Reverse Bias Protection
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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.

  • 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

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

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XR71211 1.5A Ultra Low Dropout Voltage Regulator 1B November 2015 1.5 MB
Product Brochures Power Management Brochure October 2020 2.4 MB
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Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
XR71211EH-F DFN10 3x3 OPT2 -40 125 OBS XR71211EHTR-F
XR71211EHMTR-F DFN10 3x3 OPT2 -40 125 OBS XR71211EHTR-F
XR71211EHTR-F DFN10 3x3 OPT2 -40 125 OBS XRP6272IDBTR-F or XRP6272ITC5TR-F
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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
DFN10 3x3 OPT2
  • JEDEC Reference:
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 40.5ºC/W
  • Bulk Pack Style: n/a
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Quadrant 1
  • Dimensions: mm
  • Length: 3.0
  • Width: 3.0
  • Thickness: 0.9
  • Lead Pitch: 0.5


Distribution Date Description File
11/09/2017 Product Discontinuation Notice
07/11/2017 Product Discontinuation Notification
08/21/2014 Design Change. Metal mask changed to improve trim range and yield. There is no change to the product datasheet.

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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 

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