400mA Buck/Boost Charge Pump LED Driver
Data Sheets EOL (End of Life)


# of Channels 1
Max Current/Ch (mA) 400
LEDs/ Ch. 1
Operating Voltage (MIN) (V) 2.7
Operating Voltage (MAX) (V) 5.5
Reference Voltage 50
Frequency (MHz) 2.4
Max Voltage (V) 5.5
Quiescent Current (μA) 500
Efficiency (%) 94
Package DFN-10
Application Flash
Features Charge pump topology, Enable pin, flash/torch mode, Adjustable flash current, soft-start Overvoltage, overcurrent and temperatur
Show more

The SP6686 is a current-regulated charge pump ideal for powering high brightness LEDs for camera flash applications.
The charge pump can be set to regulate two current levels for FLASH and TORCH modes. The SP6686 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. A low current sense reference voltage (50mV) allows the use of small 0603 current sensing resistors.
The SP6686 is designed to operate from a single cell lithium-ion battery or fixed 3.3V or 5.0V power rails and is available in a RoHS compliant, “green”/halogen free space saving 10-pin 3mmx3mm DFN package.

  • Output current up to 400mA
  • Up to 94% efficiency in torch mode
  • Automatic soft-start limits inrush current
  • Adjustable FLASH mode
  • x1 and x2 automatic modes for high efficiency
  • Minimum external components: no inductors
  • High frequency operation: 2.4MHz
  • Low 50mV reference for low loss sensing
  • 1μA shutdown current
  • PWM dimming control
  • Automatic switchover between buck/boost
  • Overvoltage protection on output
  • Overcurrent/temperature protection
  • Low ripple and EMI
  • Space Saving 10-pin 3mm x 3mm DFN package

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets SP6686 400mA Buck/Boost Charge Pump LED Driver 2.0.1 February 2020 1009.7 KB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Application Notes ANP-17, Design Considerations For Cell Phone Camera Flash Drivers A November 2006 101.8 KB
User Guides & Manuals SP6686 Evaluation Board Manual 1.0.0 April 2005 180 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
Symbols & Footprints SP6686ER-L/TR CAD File (.bxl) September 2018 24.7 KB
Register for a myMxL account or Login to myMxL to view all Technical Documentation & Design Tools.

Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SP6686ER-L/TR N Y Y Y Y L1 / 260ᵒC DFN10 3x3 OPT1

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
SP6686ER DFN10 3x3 OPT1 -40 85 OBS
SP6686ER-2-L DFN10 3x3 OPT1 -40 85 OBS
SP6686ER-2-L/TR DFN10 3x3 OPT1 -40 85 OBS
SP6686ER-L DFN10 3x3 OPT1 -40 85 OBS SP6686ER-L/TR
SP6686ER-L/TR DFN10 3x3 OPT1 -40 85 EOL
SP6686ER/TR DFN10 3x3 OPT1 -40 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.


Pkg Code Details Quantities Dimensions PDF
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
10/10/2023 Product Discontinuation Notice
01/31/2022 To increase manufacturing capacity, MaxLinear has qualified UTL3 extension site as an alternate assembly site together with UTL1 for QFN and DFN products.
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.
07/15/2009 Wafer fabrication process flow in Jazz Semiconductor foundry has been modified and two metal masks were revised. Applicable datasheets are changed to specify all pins meet ESD-HBM of 2KV except EN pin that meets 1KV. There is no change to Form, Fit, or Function as stated in the applicable datasheets except for the ESD rating as stated above. Process standardization to eliminate product specific flow.
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.