Click here to ask about the production status of specific part numbers. MAX20067/MAX20067B Automotive 3-Channel Display Bias IC with 2 VCOM Buffer, Level Shifter, and I C Interface General Description Benefits and Features The MAX20067/MAX20067B are complete TFT bias solu- Versatile TFT Display Power Section tions for automotive applications. They include a current- Integrated Synchronous Boost Converter with mode boost converter and two push-pull charge-pump dri- Output Voltages Up to 18V and High-power vers. (MAX20067) or Lower-power (MAX20067B) Options The ICs also include a gate-shading push-pull level shifter Integrated Charge-Pump Drivers for the VGON that can be used to improve display uniformity (when (+32V, max) and VGOFF (-24V, min) Outputs needed), and a DAC and VCOM buffer. All blocks on the 2 ICs can be used in stand-alone mode or through the I C Low EMI Operation interface. Programmable Switching Frequencies of 440kHz or 2.2MHz Comprehensive control functions are included using the Programmable Spread Spectrum 2 built-in I C interface, as well as diagnostics and monitor- 2 ing. Full Sequencing Flexibility Through I C, Along with Preset Sequences Using SEQ Pin The ICs are intended to operate with 2.7V to 5.5V sup- 2 Extended Diagnostics Using I C Interface plies. Undervoltage/Overvoltage on HVINP, VGON, and The MAX20067/MAX20067B are available in a 32-pin VGOFF TQFN package and operate in the -40C to +105C tem- Overcurrent on AVDD perature range. Temperature Warning Built-In Gate-Shading Circuit Controlled by CTL Input Applications 8-Bit DAC-Controlled VCOM Buffer Infotainment Displays Robust Central Information Displays -40C to +105C Operating Temperature Range Instrument Clusters Internal Temperature Shutdown AEC-Q100 Qualified Compact 32-Pin (5mm x 5mm) TQFN Package Ordering Information appears at end of datasheet. 19-100112 Rev 2 1/21MAX20067/MAX20067B Automotive 3-Channel Display Bias IC with VCOM 2 Buffer, Level Shifter, and I C Interface Simplified Block Diagram DGND ADD FLT ENP SEQ INA SDA REF BANDGAP CONTROL SCL REFERENCE GND VCINH DAC VCOMP BST VCOM MODE DEL BOOST LXP CONTROL CTL SRC PGND GATE GATES SHADING FBP 1.25V MAX20067/BMAX20067/B HVINP DRN HVINP POSITIVE OSC. SOFT-START & AVDD DISCHARGE PCP ON PGVDD VGOFF NEGATIVE CP POSITIVE DRVP FBGL CP HVINP FBGH VGON DRVN www.maximintegrated.com Maxim Integrated 2