MAX1672 - Maxim

MAX1672 Step-Up/Down DC-DC Converter

The MAX1672 integrates a step-up DC-DC converter with a linear regulator to provide step-up/down voltage conversion. This device provides a constant output voltage for inputs that vary above and below the output voltage. It has a 1.8V to 11V input range and a preset 3.3V or 5V output. The output can also be set from 1.25V to 5.5V using two resistors. Typical.

Features

o Step-Up/Down Voltage Conversion o 1.8V to 11V Input Range o 3.3V/5V or Adjustable Output Voltage Range o Output Current: 300mA at 5V (VIN ≥ 2.5V) 150mA at 5V (VIN ≥ 1.8V) o Smaller Inductor than SEPIC and Flybacks o Load Disconnects from Input in Shutdown o Supply Current from Battery: 85µA (No-Load) 0.1µA (Shutdown) o PGI/PGO Low-Battery Comparator o 16-Pin QSOP Package (same footprint as 8-pin SO) o No External FETs Required o Thermal and Short-Circuit Protection ________________General Description The MAX1672 integrates a step-up DC-DC converter with a linear regulator to provide step-up.