Analog Devices MAX25169 | Demoboard MAX25169EVKIT

Description

The 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.

Features

• Demonstrates Robustness of MAX25069 or MAX25169 ASIL Version
• 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 or 400kHz Resistor-Programmable Switching Frequency with Spread-Spectrum Option on LEDDriver Section with Six 150mA LED drivers.
• Synchronization input for 400kHz to 2.2MHzSwitching Frequency
• Default Output Voltages (Stand-Alone Mode)
• 6.8V Output at 200mA (Boost Converter)
• -6.8V Output at -200mA (Inverting Regulator)
• 12.8V Output at 15mA (Positive-Charge PumpRegulator)
• -9.5V Output at 15mA (Negative-Charge PumpRegulator)
• On-Board Programmability for Other Values in the Available Set.
• Phase-Shift Dimming Option
• Demonstrates Cycle-by-Cycle Current Limit andThermal-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
• Dedicated GUI
• Full Sequencing Flexibility
• Proven PCB Layout
• Fully Assembled and Tested

Typical applications

• Automotive Dashboards, Automotive Central Information Displays, Automotive Head-Up Displays, Automotive Navigation Systems

More information

• Datasheet
• IC product information