Dual Channel Step-Down Regulator
Data Sheets OBS (Obsolete)


Information Dual Channel Step-Down Regulator
# of Outputs 2
IOUT (A) 1
VIN MIN (V) 2.5
VIN MAX (V) 5.5
IQ (µA) 30
VOUT MIN (V) 0.6
Frequency (kHz) 1500
Accuracy (%) <3.0
Efficiency (%) 97
Package SOIC-8
X x Y Package Dimension (mm) -
Control Mode Current Mode PWM
Special Features Light Load PFM, Enable, Over Current Protection, Synchronous Rectification, Thermal Shutdown, UVLO, 100% Duty Cycle
Operating Temperature (°C) -40 to 85
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The XRP6668 is a dual channel synchronous current mode PWM step-down (buck) converter capable of delivering up to 1Amp of current per channel and optimized for portable battery-operated operations.

Based on a current mode 1.5MHz constant frequency PWM control scheme, the devices reduce the overall component count and solution footprint as well as provide a low output voltage ripple and excellent line and load regulation. Both devices also implement a PFM mode to improve light load efficiency as well as a 100% duty cycle LDO mode. Output voltage is adjustable to as low as 0.6V with better than 3% accuracy while a low quiescent current supports the most stringent battery operation conditions. Built-in over temperature and under voltage lock-out protections insure safe operations under abnormal operating conditions.

XRP6668 is available in a RoHS compliant, “green” halogen free 8-pin SOIC package.

  • Dual channel step-down regulators
  • Guanranteed 1A/1A output current
    • Input voltage : 2.5v to 5.5v
  • 1.5MHz PWM current mode control
    • PFM mode operations at light load
    • 100% duty cycle LDO mode operations
  • Low as o.6V adjustable output voltage
  • Internal compensation network
  • 15µA quiescent current
  • Over temperature and UVLO protections
  • RoHS compliant "green"/halogen Free 8-pin SOIC package

  • Portable equipment
  • Battery operated equipment
  • Audio video equipment
  • Networking and telecom equipment

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XRP6668 1A/1A Dual Channel 1.5MHz Sync. Step-Down Converter 1.2.1 November 2017 781.3 KB
User Guides & Manuals XRP6668 Evaluation Board Manual 1.1.0 February 2012 433.8 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package

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 PDN
XRP6668EVB Board OBS
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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
  • JEDEC Reference:
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 60ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: 98
  • Quantity per Reel: 3000
  • Quantity per Tube: 98
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Pin 1 near sprocket hole
  • Dimensions: mm
  • Length: 4.9
  • Width: 3.9
  • Thickness: 1.75
  • Lead Pitch: 1.27


Distribution Date Description File
03/13/2020 Product Discontinuation Notice - Addendum
10/01/2019 Product Discontinuation Notice
11/10/2014 Alternate Foundry Site & Process Change. Qualified HHNEC 0.45um 5V process in addition to the existing Foundry Magnachip 0.5um 5V process.

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The -F suffix indicates ROHS / Green compliance: