MAX25169EVKIT#

MAX25169 evaluation kit (EV kit) demonstrates the MAX25069/MAX25169 IC, which is a highly integrated power supply plus LED backlight driver for automotive TFT-LCD applications. The EV kit is a fully assembled and tested surface-mount PCB that provides a complete power-management solution for automotive displays. The EV kit demonstrates one current-mode boost converter with sequencing switch (HVINP–AVDD), one current mode inverting regulator (NAVDD), positive and negative gate-voltage controllers (VGON), and (VGOFF), and a boost converter that powers a six-string LED driver. The EV kit can be configured to operate in a stand-alone mode or an I2C mode.

• 2.65V to 5.5V input range for TFT-LCD power section
• Wide 4.5V to 36V input range for LED driver section
• Selectable switching frequency (2.1MHz or 420KHz)with spread-spectrum option on TFT power section
• 2.2MHz/400KHz resistor-programmable switching frequency with spread-spectrum option
• Demonstrates cycle-by-cycle current limit and thermal-shutdown features
• Demonstrates wide dimming ratio
• Demonstrates hybrid dimming for better EMI and acoustic performance and higher dimming ratio
• Demonstrates fade in/out for smooth brightness transition
• Designed to show thermal foldback function
• I2C programmability, GUI, full sequencing flexibility

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