1.5A Synchronous Step-Down Converter


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
XRP6657IHBTR-F N Y Y Y Y L1 / 260ᵒC TDFN6 2x2

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 Buy Now Order Samples
XRP6657IHBTR-F TDFN6 3x3 -40 125 Active Order
XRP6657EVB Board Active

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
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.

FAQs & Support

Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.

Submit a Technical Support Question As a New Question

Find the product page of the part that you want to get an evaluation board for and click on Parts & Purchasing. Example:


Find the icons under Buy Now or Order Samples:


Click on the Buy Now icon and see who has stock and click on the Buy button:


Alternatively, you can click on the Order Samples


If the icons are missing, then contact Customer Support.

The -F suffix indicates ROHS / Green compliance:

The best way to determine this is to go to maxlinear.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. Click on part number header or on the link at the bottom of the result.  This brings you to the product page. For example:


Click on Parts & Purchasing, highlighted with the blue arrow 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, the legend still present:


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


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.