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MAX1672 - Step-Up/Down DC-DC Converter

General Description

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.

Key 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 Des.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-1307; Rev 0a; 11/97 KIT ATION EVALU E L B AVAILA Step-Up/Down DC-DC Converter in QSOP Package ____________________________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/down voltage conversion.