70V, 60mA White LED Driver with Dimming Control and Automatic Thermal Scale-Back Reference Design
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Key Document


Compact, High Efficienct (>90%) White LED Driver.  Drives a 440 lumen White LED at up to 70V at up to 60mA from a 6V to 18V source.  Includes voltage controlled dimming with automatic thermal to current scale-back for preventing high LED temperatures.  Designed for genral purpose LED lighting in 6V to 18V DC powered systems.

  • 6V to 18V Input Voltage Range
  • 1.5mA to 60mA Dimmable Current
  • Automatically Reduces Current by up to 50% in high temperature conditions
  • High (>90%) Efficiency
  • Voltage Controlled Dimming for Potentiometer or DAC Interface

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA4374  Quad 6.5MHz, 585uA, Rail-to-Rail I/O CMOS Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy Not Available
TPS61165  High brightness white LED driver in 2mm x 2mm QFN Package  LED drivers  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection and enable  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA4374 Download Download
Download Download
TPS61165 Download -
Download Download
TPS709 Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 900 14 Oct 2015
Design files (5)
Title Type Size (KB) Date
ZIP 324 14 Oct 2015
PDF 52 14 Oct 2015
PDF 63 14 Oct 2015
PDF 200 14 Oct 2015
PDF 143 14 Oct 2015

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