Features and Benefits

  • +0.9V to +4.5V Input Range
  • High-Power Output: 4.5V or Adjustable
  • Dual Outputs: Step-up and Linear Regulator
  • 200mA Max Linear-Regulator Output Current
  • Optional Track Mode for Highest Efficiency
  • Low-Noise, 3.3V or Adjustable Output Voltage
  • High-Efficiency Step-up Converter: up to 96%
  • Up to 850mA Total Output Current
  • Internal 300kHz Oscillator
  • Internal MOSFET and Synchronous Rectifier
  • 1µA Shutdown Current
  • Power-Good Output
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX1705 evaluation kit (EV kit) is a step-up switching regulator for battery-powered systems operating from 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell. The EV kit accepts a +0.9V to +4.5V input and converts it to a 4.5V step-up output and a 3.3V linear-regulator output. It provides low quiescent current, high-efficiency pulse-frequency-modulation operation for maximum battery life, and a high-power, fixed-frequency pulse-width-modulation mode. The MAX1705 features a built-in, low-dropout linear post-regulator that reduces high-frequency ripple.

The MAX1705 EV kit is a fully assembled and tested surface-mount circuit board. It can also be used to evaluate the MAX1706.


  • Digital Cordless Phones
  • Handheld Instruments (PDAs, Palmtops)
  • Palmtop Computers
  • PCS Phones
  • Personal Communicators
  • Two-Way Paging
  • Wireless Handsets

Applicable Parts