Analog Devices MAX20067B Product Info

• 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

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.

Applications

• Central Information Displays
• Infotainment Displays
• Instrument Clusters