Features and Benefits

  • 0.7V to VOUT Input Voltage Range
  • Pin-Selectable 3.3V or 5V Output Voltage (5V as Shipped)
  • Adjustable Output Voltage (2.5V to 5.5V, External Divider)
  • Up to 4A Output Current
  • 600kHz PWM Operation
  • Internal 10A MOSFET Switch
  • 4µA IC Shutdown Current
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX1709 evaluation kit (EV kit) is a step-up DC-DC switching regulator for 1- to 3-cell battery inputs as well as 2.5V or 3.3V regulated supply inputs. The EV kit accepts a positive input between 0.7V and VOUT and converts it to a higher, pin-selectable output voltage.

Efficiency is up to 87% with output load currents to 4A. This EV kit operates at a fixed 600kHz PWM frequency, allowing the use of a small inductor.

A movable jumper on the EV kit selects either a 3.3V or 5V output voltage. Additional pads on the board accommodate the resistors for output adjustment. This EV kit uses surface-mount components and is fully assembled and tested for quick evaluation.


  • 3.6V or 5V RF PAs in Communications Handsets
  • Local 2.5V to 3.3V or 5V Conversion
  • Local 3.3V to 5V Conversion
  • Routers, Servers, Workstations, Card Racks

Documentation & Resources