MAX25540

• High Integration
  • Complete Display Power Solution from Automotive Battery
  • One High-Voltage 2.1A Buck Converter (3.3V)
  • One High-Voltage 100mA Low-IQ Linear Regulator (3.3V)
  • One Low-Voltage 1.6A Buck Converter (1V)
  • One Low-Voltage 175mA Linear Regulator (1.8V)
  • Power-Good Outputs
• Robust and Low electromagnetic interference (EMI)
  • Programmable Switching Frequency
  • Internal Spread Spectrum Oscillator
  • Slew-Rate Controlled Switching
  • Thermal Shutdown Protection
• Proven PCB Layout
• Fully Assembled and Tested
• Automotive CISPR25 CLASS5 compliant
• -40°C to +105°C Operating Temperature Range

The MAX25540 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB used to evaluate the MAX25540 automotive 4-output display-power solution. The MAX25540 is a 4-channel power management integrated circuit (PMIC) designed to accommodate the main rails used in modern automotive thin-film transistor (TFT) displays. The MAX25540 integrates a high-voltage buck converter that transforms battery voltages into a 3.3V intermediate rail. In addition, a high-voltage, always-on, low-quiescent-current linear regulator supplies power at 3.3V. The low-voltage section consists of a fully integrated DC/DC converter and a low dropout (LDO) running off the intermediate rail. The low-voltage DC/DC converter provides 1V, while the LDO produces 1.8V. A single START control pin initiates the start-up sequence, thereby simplifying device control. The MAX25540’s external PMOSFET control block allows battery voltage to be switched to a downstream device, such as a backlight boost converter. The MAX25540 also embeds selectable switching frequencies with spread spectrum.

Applications

• Central Information Displays
• Infotainment Displays
• Instrument Clusters