TIDA-01008

Optical Sense Backlight Reference Design with Temperature Sensing

TIDA-01008

Design files

Overview

This reference design conserves power and extends life of LCD and backlight by adjusting the backlight brightness relative to the ambient light level. The capTIvate touch slider allows the brightness to be finetuned per the user's brightness preference. The sensitive thermal requirements of the LCD display is monitored by the remote temperature sensors enabling thermal shutdown to protect the system.

Features
  • Operating range from 4V to 40V
  • 6 strings of 8 LEDs, 150mA max per string
  • Adjusts backlight brightness based on ambient light level
  • Capacitive touch slider for tuning or setting brightness
  • Temperature monitoring and shutdown during over-temperature condition
  • Lowers system power and extends life of backlight and LCD

Design files & products

Design files

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

TIDUDI3.PDF (3291 K)

Reference design overview and verified performance test data

TIDRV45.PDF (293 K)

Detailed schematic diagram for design layout and components

TIDRV46.PDF (104 K)

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

TIDRV47.PDF (319 K)

Detailed overview of design layout for component placement

TIDRV49.ZIP (1666 K)

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

TIDCED4.ZIP (4494 K)

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

TIDRV48.PDF (2165 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Ambient light sensors

OPT3001-Q1Automotive digital ambient light sensor (ALS) with high-precision human-eye response

Data sheet document-pdfAcrobat PDF open-in-new HTML
Automotive LED drivers

LP8863-Q1LP8863-Q1 Automotive Display LED-Backlight driver with Six 150-mA channels

Data sheet document-pdfAcrobat PDF open-in-new HTML
Digital temperature sensors

TMP423-Q1AEC-Q100 Automotive 3Ch Remote Temperature Sensor

Data sheet document-pdfAcrobat PDF open-in-new HTML
Ideal diode/ORing controllers

LM74700-Q13.2-V to 65-V, 80-uA IQ automotive ideal diode controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7B69-Q1Automotive 150-mA, off-battery (40-V), high-PSRR, low-IQ, low-dropout voltage regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Load switches

TPS22918-Q11-ch, 5.5-V, 2-A, 52-mΩ automotive load switch with adj. rise time and adj. output discharg

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430FR2633Capacitive Touch MCU with 16 touch IO (64 sensors), 16KB FRAM, 4KB SRAM, 19 IO, 10-bit ADC

Data sheet document-pdfAcrobat PDF open-in-new HTML

Start development

Software

Application software & framework

TIDA-01008_SOURCE_CODE – TIDCED5.ZIP (333 K)

Technical documentation

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Type Title Date
* Design guide Reference Design for Optical Sense-Controlled Backlight With Temperature Sensing Dec. 01, 2017

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