Step-Up White LED Converter


Package SOT23-6
Frequency (MHz) 1.2
Reference Voltage 200
# of Channels 1
Max Current/Ch (mA) 20
Efficiency (%) 84
Features Integrated Schottky diode, Enable pin, PWM dimming, Soft-start
Max Voltage (V) 27
Application Backlight
LEDs/ Ch. 6
Operating Voltage (MAX) (V) 16
Operating Voltage (MIN) (V) 2.5
Quiescent Current (μA) 3.2
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The SP6699 is an inductor-based DC/DC converter designed to drive up to six white LEDs in series for LCD modules and keypad backlighting functions.
Only one feedback resistor is needed to control the LED current and obtain the desired brightness. A 1.2MHz constant frequency PWM control scheme is used, enabling the usage of small external components. A typical application needs a 1mm tall inductor and a 0.22μF output capacitor. Additionally, the boost circuit Schottky diode is integrated, further reducing the overall foot print.
A logic controlled enable pin allows this device to be placed in a low current consumption mode of a few microamps. Furthermore, the SP6699 is equipped with an over voltage output protection circuit which clamps the output voltage to 30 volts when any LED fails or in other abnormal conditions.
The SP6699 is offered in a small lead free, RoHS compliant 6-pin SOT23 package.

Rev. 2.1.0 Datasheet Features

  • High output voltage: up to 27V
    • Drives 2 to 5 LEDs @ 20mA
    • High efficiency up to 84%
  • Integrated Schottky diode
  • Fast 1.0MHz switching frequency
  • 200mV feedback voltage
  • PWM dimming capability up to 1KHz
  • Analog dimming
  • Over output voltage protection
  • Internal soft-start circuit
  • Small SOT23-6 package

Rev. 3.0.0 Datasheet Features (ref. PCN_14-0415-01)
  • High Output Voltage: Up to 30V
    • Drives 2 to 8 LEDs @ 20mA
    • High Efficiency up to 84%
  • Integrated Schottky Diode
  • Fast 1.2MHz Switching Frequency
  • 200mV Feedback Voltage
  • PWM Dimming Capability up to 2KHz
  • Over Output Voltage Protection
  • Internal Soft Start Circuit
  • Small SOT-23-6 Package

  • Cellular phones
  • LCD modules
  • Keypad backlighting
  • Digital cameras
  • GPS receivers
  • Portable media players

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets SP6699 30V Step Up White LED Driver 3.0.1 February 2020 733 KB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
User Guides & Manuals SP6699 Evaluation Board Manual A March 2008 142.8 KB
Product Flyers Step Up White LED Converter 1.0.0 June 2008 204.9 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
Symbols & Footprints SP6699EK-L/TR CAD File (.bxl) September 2018 80.7 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SP6699EK-L/TR N Y Y Y Y L3 / 260ᵒC SOT-23-6

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 Order Samples PDN
SP6699EK-L SOT-23-6 OPT2 -40 85 OBS
SP6699EK-L/TR SOT-23-6 OPT2 -40 85 Active Order
SP6699EB Board 0 85 Active
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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
SOT-23-6 OPT2
  • JEDEC Reference: MO-178
  • MSL Pb-Free: L3 @ 260C
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 190C/W
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: na
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 4
  • Tape & Reel Unit Orientation: Quadrant 2
  • Dimensions: mm
  • Length: 2.90
  • Width: 1.60
  • Thickness: 1.45
  • Lead Pitch: 0.95


Distribution Date Description File
02/19/2016 Material change. Qualified copper wire bonding assembly.
01/09/2015 Alternate Assembly Site Change. Qualified JCET ChuZhou for assembly of the listed parts.
04/28/2014 Design and datasheet changes. The SP6699 has been updated to improve compatibility with PWM dimming inputs.
08/07/2009 Notice of Obsolescence – Selected Power Management Parts Discontinued due to low market demand, effective immediately.
07/15/2009 These products will be dry packed to eliminate possible moisture related failures at board assembly. There is no change to Form, Fit, or Function as stated in the applicable datasheets. Products having moisture sensitivity greater than level 1 require dry packs according to the internal procedures and JEDEC guidelines.

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.
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Submit a Technical Support Question As a New Question

Find the product page of the part that you want to get an evaluation board for and click on Parts & Purchasing. Example:


Find the icons under Buy Now or Order Samples:


Click on the Buy Now icon and see who has stock and click on the Buy button:


Alternatively, you can click on the Order Samples


If the icons are missing, then contact Customer Support.

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:


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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.