Reference design for automotive cluster driver notification functions


Design files


This reference design implements power and driver notification functions typically found in an automotive instrument cluster. The design features reverse battery protection, a pre-boost stage to support cold-crank battery voltage conditions down to 3.5 volts, buck regulators for 3.3-V and 5-V supplies, an audio amplifier circuit to provide notifications, an LED backlight supply with automated brightness control and LED drivers with flexible diagnostic functions for tell-tale LEDs.

  • Wide Vin range supports cold cranking to 3.5V and load dump to 40V
  • Tell-tale LED drivers with configurable fault diagnostics
  • 5V, single rail audio amplifier for chime and warning
  • Adjustable ambient backlight brightness with light sensor
  • Low loss reverse battery protection for reduced power dissipation
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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.


Reference design overview and verified performance test data


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

TIDRXM9.ZIP (2595 K)

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

TIDCF04.ZIP (5997 K)

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

TIDRXM8.PDF (3887 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Automotive LED drivers

TLC6C5816-Q1Automotive power logic 16-bit Shift Register LED driver with diagnostics

Data sheet: PDF | HTML
Automotive LED drivers

TPS61193-Q1Low-EMI, high-performance 3-channel LED driver for Automotive lighting

Data sheet: PDF | HTML
Boost controllers (external switch)

LM5150-Q1Automotive 1.5-V to 42-V VIN, low IQ boost controller with 6.8V, 7.5V, 8.5V, 10.5V output options

Data sheet: PDF | HTML
Buck converters (integrated switch)

LM43602-Q1Automotive Qualified 3.5V to 36V, 2A Synchronous Step-Down Voltage Converter

Data sheet: PDF | HTML
Buck converters (integrated switch)

LMR33630-Q13.8-V to 36-V, 3-A synchronous step-down voltage converter

Data sheet: PDF | HTML
Ideal diode/ORing controllers

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

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA320-Q1Automotive qualified, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet: PDF | HTML
Speaker amps

TPA6211A1-Q1Automotive, 3.1-W, mono, analog input Class-AB audio amplifier

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* Design guide Reference Design for Automotive Cluster Driver Notification Functions (Rev. B) PDF | HTML Jun. 29, 2020

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