Automotive 3-Channel Display Bias IC with VCOM Buffer, Level Shifter, and I2C Interface

Industry's First Integrated Power Solution for TFT-LCD with Synchronous Boost, Gate-Shading and I2C

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The MAX20067 IC is a complete TFT bias solution for automotive applications. It includes a current-mode boost converter and two push-pull charge-pump drivers.

The IC also includes a gate-shading push-pull level shifter that can be used to improve display uniformity (when needed), and a DAC and VCOM buffer. All blocks on the IC can be used in stand-alone mode or through the I2C interface.

Comprehensive control functions are included using the built-in I2C interface, as well as diagnostics and monitoring.

The IC is intended to operate with 2.7V to 5.5V supplies.

The MAX20067 is available in a 32-pin TQFN package and operates in the -40°C to +105°C temperature range.
MAX20067: Simplified Block Diagram MAX20067: Simplified Block Diagram Enlarge+

Key Features

  • Versatile TFT Display Power Section
    • Integrated Synchronous Boost Converter with Output Voltages Up to 18V
    • Integrated Charge-Pump Drivers for the VGON (+36V, max) and VGOFF (-24V, min) Outputs
  • Low EMI Operation
    • Programmable Switching Frequencies of 440kHz or 2.2MHz
    • Programmable Spread Spectrum
  • Full Sequencing Flexibility Through I2C, Along with Preset Sequences Using SEQ Pin
  • Extended Diagnostics Using I2C Interface
    • Undervoltage/Overvoltage on HVINP, VGON, and VGOFF
    • Overcurrent on AVDD
    • Temperature Warning
  • Built-In Gate-Shading Circuit Controlled by CTL Input
  • 8-Bit DAC-Controlled VCOM Buffer
  • Robust
    • -40°C to +105°C Operating Temperature Range
    • Internal Temperature Shutdown
    • AEC-Q100 Qualified
  • Compact 32-Pin (5mm × 5mm) TQFN Package


  • Central Information Displays
  • Infotainment Displays
  • Instrument Clusters

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX20067EVKIT: Evaluation Kit for the MAX20067
MAX20067EVSYS: Evaluation Kit for the MAX20067
Request Reliability Report for: MAX20067 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources

Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer and ASIL B Features

  • High Integration
  • Low EMI
  • I2C Control/Diagnostic Interface with FLTB (Interrupt) Output

Automotive 4-Channel TFT-LCD Power Supply with VCOM buffer

  • High Integration
  • Low EMI
  • I2C Control/Diagnostic Interface with FLTB (Interrupt) Output