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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

Product Details

Key Features

Parametric specs for Multifunction PMICs
VIN (V) (min) 2.7
VIN (V) (max) 5.5
# Step-Down Outputs 1
# Step-Up Outputs 2
# Inverting Outputs 2
VOUT (V) (min) -14
VOUT (V) (max) 36
Package/Pins TQFN-CU/32
Budgetary
Price (See Notes)
1.91
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Simplified Block Diagram

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Parameters

Parametric specs for Multifunction PMICs
VIN (V) (min) 2.7
VIN (V) (max) 5.5
# Step-Down Outputs 1
# Step-Up Outputs 2
# Inverting Outputs 2
VOUT (V) (min) -14
VOUT (V) (max) 36
Package/Pins TQFN-CU/32
Budgetary
Price (See Notes)
1.91

Key Features

  • Versatile TFT Display Power Section
    • IIntegrated Synchronous Boost Converter with Output Voltages Up to 18V and High-power (MAX20067) or Lower-power (MAX20067B) Options
    • 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

Applications/Uses

  • Central Information Displays
  • Infotainment Displays
  • Instrument Clusters

Description

The MAX20067/MAX20067B are 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/MAX20067B are available in a 32-pin TQFN package and operates in the -40°C to +105°C temperature range.

Simplified Block Diagram

MAX20067: Simplified Block Diagram MAX20067: Simplified Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .