Features and Benefits

  • 6V to 24V Input Range
  • Internal 5V and 3.3V Linear Regulators with 100mA Load Capability
  • Output Voltage:
    3.3V at 5A (Adjustable from 1V to 5.5V)
    5V at 5A (Adjustable from 1V to 5.5V)
  • 300kHz Switching Frequency (Selectable 200kHz/300kHz/500kHz)
  • Power-Good Output
  • Selectable Over- and Undervoltage Protection
  • 32-Pin Thin QFN Package
  • Fully Assembled and Tested
  • Product Details

    The MAX1533 evaluation kit (EV kit) demonstrates the MAX1533's standard application circuit. This dual-PWM synchronous DC-DC converter steps down high-voltage batteries and/or AC adapters, generating main supplies for notebook computers. The MAX1533 EV kit operates at 300kHz switching frequency and provides dual 5V and 3.3V output voltages from a 5V to 24V battery input range. It delivers up to 5A output current for the 5V output and 6A for the 3.3V output with 97% efficiency. Both outputs are adjustable between 1V and 5.5V by changing feedback resistors R19–R22.

    The MAX1533 also has an internal fixed 3.3V and 5V linear regulator capable of supplying 100mA. The MAX1533 EV kit operates at 300kHz switching frequency.


    • 2 to 4 Li+ Cell Battery-Powered Devices
    • Notebook and Subnotebook Computers
    • PDAs and Mobile Communicators

    Documentation & Resources