LED Driver SEPIC Converter (9.9V@0.24A) Reference Design


Design files


This SEPIC converter regulates current in 3 series white LEDs to 0.24A while operating over an input voltage range of 8.7V - 16.5V. The SEPIC operates at 1.2MHz, allowing the circuit to occupy an area of only 10mm x 20mm. Applications include an LED backlight for portable medical devices.

  • Low cost, small area, integrated FET design
  • Very good efficiency (86% at full load, 12Vin)
  • External PWM signal linearly controls LED current
  • Low profile (1.8mm max height)
  • Optional open LED status output signal
Output voltage options PMP10835.1
Vin (Min) (V) 8.7
Vin (Max) (V) 16.5
Vout (Nom) (V) 9.9
Iout (Max) (A) .24
Output Power (W) 2.376
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Sepic- CCM
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUC35.PDF (2135 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRMY9.ZIP (18086 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Backlight LED drivers

TPS61165High brightness white LED driver in 2mm x 2mm QFN Package

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP10835 Test Results Jul. 26, 2016

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