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Overview

Features and Benefits

  • 7V to 24V Input Voltage Range
  • 3.3V and 5V Output Voltages
  • 2V to 5.5V Adjustable Outputs (External Resistors)
  • 5A Output Current (3.3V Output)
  • 5A Output Current (5V Output)
  • No Current-Sense Resistor Needed (MAX1999)
  • Accurate Current Sense with Current-Sense Resistor (MAX1777/MAX1977)
  • 200kHz/300kHz Switching Frequency (5V/3.3V, Respectively)
  • Power-Good (PGOOD) Output
  • Fault Protection Enable/Disable
  • 28-Pin QSOP Package
  • Low-Profile Components
  • Fully Assembled and Tested

    • Product Details

    The MAX1999 evaluation kit (EV kit) demonstrates the MAX1999's standard application circuit. This DC-DC converter steps down high-voltage batteries and/or AC adapters, generating system supplies for notebook computers. The MAX1999 EV kit provides dual 5V and 3.3V output voltages from a 7V to 24V battery input range. It delivers up to 5A output current for the 5V output and 5A for the 3.3V output with greater than 90% efficiency. The EV kit operates at 200kHz/300kHz switching frequency (5V/3.3V, respectively) and has superior line-and-load- transient response.

    This EV kit is a fully assembled and tested circuit board. It allows the evaluation of other output voltages in the 2V to 5.5V range by changing feedback resistors R1-R4.

    This EV kit can also be used to evaluate the MAX1777 (200kHz/5.0V SMPS and 300kHz/3.3V SMPS) and the MAX1977 (400kHz/5.0V SMPS and 500kHz/3.3V SMPS).

    Applications

    • Cable Television Set-Top Boxes

    Documentation & Resources

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