High Efficiency Step-Up Regulator


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.

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  • 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


Design Tools

Reference Designs


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference: n/a
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 81.2ºC/W
  • Bulk Pack Style: Canister
  • 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 at sprocket hole
  • Dimensions: mm
  • Length: 2.5
  • Width: 2.4
  • Thickness: 0.9
  • Lead Pitch: 0.5
  • 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: 0.85
  • Lead Pitch: 0.50
  • JEDEC Reference:
  • MSL Pb-Free:
  • MSL SnPb Eutectic:
  • ThetaJA:
  • Bulk Pack Style:
  • Quantity per Bulk Pack:
  • Quantity per Reel:
  • Quantity per Tube:
  • Quantity per Tray:
  • Reel Size (Dia. x Width x Pitch):
  • Tape & Reel Unit Orientation:
  • Dimensions:
  • Length:
  • Width:
  • Thickness:
  • Lead Pitch:

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP6648ER DFN10 -40 85 OBS
SP6648ER/TR DFN10 -40 85 OBS
SP6648ER-L DFN10 COL -40 85 OBS Suggested:
SP6648ER-L/TR DFN10 COL -40 85 Active
SP6648EU MSOP8 -40 85 OBS
SP6648EU/TR MSOP8 -40 85 OBS
SP6648EU-L MSOP10 -40 85 OBS Suggested:
SP6648EU-L/TR MSOP10 -40 85 Active
SP6648EB Board 0 85 Active
SP6648LEDEB Board 0 85 Active
SP6648UEB Board 0 85 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.
Distribution Date Description File
01/27/2017 Qualification of alternate assembly subcon, ANST, China. PCN 16-1145-04-01 ANST-1033.pdf
07/26/2016 Product discontinuation notification. Discontinued. PDN 16-0626-01-1033.pdf
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. PCN_13-0522-04-1033.pdf
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. PCN_11-0810-01-1033.pdf
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued. POL_022807-1033.pdf
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. PCN-05-0801-01-1033.pdf
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. PCN-04-0410-01-1033.pdf