High Efficiency Step-Up Regulator
Data Sheets OBS (Obsolete)


Information High Efficiency Step-Up Regulator
# of Outputs 1
IOUT (A) 0.4
Peak Switch Current (A) 1.3
VIN MIN (V) 0.7
VIN MAX (V) 4.5
Startup Voltage (V) 0.85
IQ (µA) 12
VOUT MIN (V) 2.5
VOUT MAX (V) 5.5
Frequency (kHz) -
Efficiency (%) 94
Operating Temperature (°C) -40 to 85
Package MSOP-10
Special Features Synchronous, Enable pin, Programmable low battery detection, Under voltage lockout protection
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The SP6648 is an ultra-low quiescent current, high efficiency step-up DC/DC converter ideal for single cell, dual cell alkaline and Li-ion battery applications such as digital still cameras, PDAs, MP3 players and other portable devices. The SP6648 combines the high-load efficiency associated with PWM control, with the low quiescent current and excellent light-load efficiency of PFM control. The SP6648 features 12μA quiescent current, synchronous rectification, a 0.3Ω charging switch, anti-ringing inductor switch, programmable low-battery detect, undervoltage lockout and programmable inductor peak current. The device can be controlled by a 1nA active LOW shutdown pin.

  • Ultra-low 12µA quiescent current
  • 400mA output current at 2.6V input: 3.3VOUT
  • 94% efficiency from 2 cell to 3.3VOUT
  • Wide input voltage range: 0.85V to 4.5V
  • 3.3V fixed or adjustable output
  • Integrated synchronous rectifier: 0.3Ω
  • 0.3Ω switch
  • Anti-ringing switch technology
  • Programmable inductor peak current
  • Logic shutdown control
  • Under voltage lock-out at 0.61V
  • Programmable low battery detect
  • Single or dual cell alkaline
  • Small 10-pin DFN package and industry standard 10-pin MSOP

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator 1.0.0 July 2006 256 KB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Application Notes ANP-08, SP6648 Flashlight Application C November 2006 110.9 KB
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 SP6648LEDEvaluation Board Manual 1.0.0 September 2003 98.3 KB
User Guides & Manuals SP6648 Evaluation Board Manual 1.0.0 April 2003 125.6 KB
Design Solutions DS-49, 88% Efficient 30mV Output Ripple Inductive Boost Regulator Provides 70mA Supply for Portable Wireless Product Applications November 2007 119.6 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
Symbols & Footprints SP6648EU-L/TR CAD File (.bxl) September 2018 85.1 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SP6648EU-L/TR N Y Y Y Y L1 / 260ᵒC MSOP10

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
SP6648ER DFN10 3x3 OPT1 -40 85 OBS
SP6648ER-L DFN10 3x3 OPT1 -40 85 OBS SP6648ER-L/TR
SP6648ER-L/TR DFN10 3x3 OPT1 -40 85 OBS SP6648EU-L/TR
SP6648ER/TR DFN10 3x3 OPT1 -40 85 OBS
SP6648EU MSOP10 -40 85 OBS
SP6648EU-L MSOP10 -40 85 OBS SP6648EU/TR
SP6648EU-L/TR MSOP10 -40 85 OBS
SP6648EU/TR MSOP10 -40 85 OBS
SP6648UEB Board 0 85 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: 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
08/19/2022 Product Discontinuation Notice
07/11/2017 Product Discontinuation Notification
01/27/2017 Qualification of alternate assembly subcon, ANST, China.
07/26/2016 Product discontinuation notification. Discontinued.
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.
09/01/2005 Sipex qualified UMC as an alternative manufacturing source for the SP6648. Sipex plans to add UMC for additional capacity for the SP6648.
04/14/2005 UMC has been added as Qualified wafer fab. subcontractor for SP6682 & SP6684 product families. Consolidation of wafer fab subcontractors which will result in decrease manufacturing cycle.

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