1.5A Synchronous Step-Down Converter
Data Sheet EOL (End of Life)


Information 1.5A Synchronous Step-Down Converter
Package DFN-6
IQ (µA) 240
Special Features Light Load PFM, Enable, Over Current Protection, Synchronous Rectification, Thermal Shutdown, Soft Start Built-in, Internal Compensation, 100% Duty Cycle
VIN MIN (V) 2.5
VIN MAX (V) 5.5
# of Outputs 1
VOUT MIN (V) 0.6
Frequency (kHz) 1300
Efficiency (%) 95
Accuracy (%) <2.5
IOUT (A) 1.5
X x Y Package Dimension (mm) -
Control Mode Current Mode PWM
Operating Temperature (°C) -40 to 125
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The XRP6657 is a high efficiency synchronous step-down DC to DC converter capable of delivering up to 1.5 Amp of current and optimized for portable battery operated applications.

Operating over an input voltage range of 2.5V to 5.5V, it provides an adjustable regulated output voltage down to 0.6V. The XRP6657 uses a constant 1.3 MHz frequency Pulse Width Modulation (PWM) scheme allowing for compact external components, low output voltage ripple and fixed frequency noise, while Pulse Skip Mode (PSM) is used to improve light load efficiency. A low dropout mode provides 100% duty cycle operation. The solution footprint is further reduced by a current mode internal compensation network and built-in synchronous switch removing the need for an external Schottky. Overcurrent and over temperature protection insures safe operations under abnormal operating conditions.

The XRP6657 is available in a compact RoHS compliant "green"/halogen free thin 6-pin DFN package.

  • Guaranteed 1.5A output current
  • Fixed 1.3MHz frequency PWM operations
  • Up to 95% efficiency
  • Input voltage: 2.5V to 5.5V
  • Adjustable output voltage
  • Internal compensation network
  • No Schottky diode required
  • LDO operation: 100% duty cycle
  • 240µA quiescent current (no load)
  • 1µA shutdown current
  • Soft-start function
  • Overcurrent/over temperature protection
  • "Green"/halogen free DFN-6 package

  • Point of Load (POL)
  • Set-top boxes
  • Portable media players
  • Hard disk drives

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XRP6657 1.5A 1.3MHz Synchronous Step Down Converter 1.5.1 February 2020 1.1 MB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
User Guides & Manuals XRP6657 Evaluation Board Manual 1.1.0 February 2012 528.5 KB
Product Flyers Power Management & Interface Products for Cable, Satellite and IP STB/Home Gateway March 2018 2 MB
Product Brochures Power Management Brochure October 2020 2.4 MB
Symbols & Footprints XRP6657IHBTR-F CAD File (.bxl) September 2018 23.9 KB
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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 Buy Now PDN
XRP6657IHBTR-F TDFN6 3x3 -40 125 EOL XRP6658ISTR-F
XRP6657EVB Board EOL
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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
TDFN6 3x3
  • JEDEC Reference: MO-229
  • MSL Pb-Free: L3 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA:
  • 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: Pin 1 near sprocket hole
  • Dimensions: mm
  • Length: 3.00
  • Width: 3.00
  • Thickness: 0.8
  • Lead Pitch: 0.95


Distribution Date Description File
11/03/2022 Product Discontinuation Notice
05/31/2013 Lead-frame plate from PPF to non-PPF lead-finish + Sn plating. Wire material change from gold to copper wire. Material change.

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