400mA Buck/Boost Charge Pump LED Driver
Data Sheet


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


Design Tools

Symbols & Footprints


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

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Buy Now Order Samples
SP6686ER DFN10 3x3 OPT1 -40 85 OBS
SP6686ER/TR 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 Suggested:
SP6686ER-L/TR DFN10 3x3 OPT1 -40 85 Active Order
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.

Quality & Environmental Data

Part Number RoHS | Exempt RoHS Halogen Free REACH MSL Rating / Peak Reflow Package
SP6686ER-L/TR N 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.
Distribution Date Description File
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.


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.

Frequently Asked Questions

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.

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