Ultra-Low Quiescent Current, High Efficiency Boost Regulator
Data Sheets OBS (Obsolete)


# of Channels
Max Current/Ch (mA)
LEDs/ Ch.
Operating Voltage (MIN) (V)
Operating Voltage (MAX) (V)
Reference Voltage
Frequency (MHz)
Max Voltage (V)
Quiescent Current (μA)
Efficiency (%)
Show more

  • True shutdown
  • 700mA output current at 3.3V Input; 4.2V output
  • 92% efficiency from 2.7VIN to 3.3VOUT
  • Wide input voltage range: 2.7V to 4.5V
  • 5V fixed or adjustable output
  • 0.3Ω switch
  • Integrated synchronous rectifier:0.3Ω
  • Anti-ringing switch technology
  • Programmable inductor peak current
  • Logic shutdown control
  • Low 0.8V or 0.288V reference voltage
  • Small 10-pin DFN or MSOP package

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets SP7648 Ultra-Low Quiescent Current, High Efficiency Boost Regulator 2.0.0 November 2012 1.5 MB
Application Notes ANP-28, Filter Design in Continuous Conduction Mode (CCM) of Operation; Part 2 Boost Regulator A March 2006 285.9 KB
User Guides & Manuals SP7648 Evaluation Board Manual 1.0.0 June 2005 253.6 KB
Design Solutions DS-07, SP7648 1A Flash LED Driver January 2006 115.2 KB
Design Solutions DS-08, SP7648 700mA Flash LED Driver January 2006 123.1 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
Register for a myMxL account or Login to myMxL to view all Technical Documentation & Design Tools.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
SP7648ER DFN10 3x3 OPT1 0 70 OBS
SP7648ER-L DFN10 3x3 OPT1 -40 85 OBS SP7685ER-L
SP7648ER-L/TR DFN10 3x3 OPT1 -40 85 OBS SP7685ER-L/TR
SP7648ER/TR DFN10 3x3 OPT1 -40 85 OBS
SP7648EU MSOP10 -40 85 OBS
SP7648EU-ES MSOP10 -40 85 OBS
SP7648EU-L MSOP10 -40 85 OBS SP7685ER-L
SP7648EU-L/TR MSOP10 -40 85 OBS SP7685ER-L/TR
SP7648EU/TR MSOP10 0 70 OBS
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.


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference: MO-187
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 214.0ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack:
  • Quantity per Reel: 2500
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole.
  • Dimensions: mm
  • Length: 3
  • Width: 3
  • Thickness: 1.1
  • Lead Pitch: 0.50
DFN10 3x3 OPT1
  • JEDEC Reference:
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 40.5C/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
  • Width: 3
  • Thickness: 1.00
  • Lead Pitch: 0.5


Distribution Date Description File
07/20/2015 Product discontinuation notification
10/04/2013 Addition of an alternate qualified assembly site, UTAC Thailand, for assembly using copper or gold wire bonding. Material change and alternate assembly site.
08/29/2011 Material change: Mold compound and die attach material are changed and the listed parts will be fully Green (halogen-free). Migrating to green environment and material standardization.
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.

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

Visit the product page for the part you are interested in.  The part's status is listed in the Parts & Purchasing section.  You can also view Product Lifecycle and Obsolescence Information including PDNs (Product Discontinuation Notifications).
To visit a product page, type the part into the search window on the top of the MaxLinear website.
In this example, we searched for XRA1201.  Visit the product page by clicking the part number or visit the orderable parts list by clicking "Orderable Parts". 



The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product.  Click Show obsolete parts, to see all EOL or OBS products.