MAX1709EVKIT

The MAX1709EVKIT 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.

Features of the MAX1709EVKIT are:(1)0.7V to VOUT input voltage range;(2)pin-selectable 3.3V or 5V output voltage;(3)adjustable output voltage;(4)up to 4A output current;(5)600kHz PWM operation;(6)internal 10A MOSFET switch;(7)4A IC shutdown current;(8)surface-mount components;(9)fully assembled and tested.

The MAX1709EVKIT provides a pin-selectable 3.3V or 5V output from a 0.7V to VOUT input voltage.The output voltage can also be adjusted with external resistors for voltages between 2.5V and 5.5V.Connecting an external resistor from SS/LIM to GND (R3) can also reduce the current limit.Connecting a capacitor from SS/LIM to GND (C10) sets the soft-start rate.The EV kit operates at a 600kHz switching frequency and allows the use of a small inductor value.The switching frequency can also be synchronized to an external clock ranging from 350kHz to 1MHz.