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HM3440 - Synchronous Buck-Boost DC/DC Regulator

General Description

The HM3440 is high efficiency, fixed frequency, Buck-Boost DC/DC converter that operates from input voltages above, below or equal to the output voltage.

Key Features

  • Synchronous Rectification: Up to 95% Efficiency Single Inductor Fixed Frequency Operation with Battery Voltages Above, Below or Equal to the ： Output Quiescent Current 1mA (50uA low power mode: mode pin high) Up to 1A Continuous Output Current 2.7V to 5.5V Input and Output Voltage range Programmable oscillator frequency from （ ） 350kHz to 1.5MHz No Schottky Diodes required VOUT.

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

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+0 Synchronous Buck-Boost DC/DC Regulator Features Synchronous Rectification: Up to 95% Efficiency Single Inductor Fixed Frequency Operation with Battery Voltages Above, Below or Equal to the ： Output Quiescent Current 1mA (50uA low power mode: mode pin high) Up to 1A Continuous Output Current 2.7V to 5.5V Input and Output Voltage range Programmable oscillator frequency from （ ） 350kHz to 1.5MHz No Schottky Diodes required VOUT<4.3V VOUT Disconnected from VIN During ＜Shutdown 1µA Shutdown Current Package: Small Thermally Enhanced 10-pin MSOP Description The HM3440 is high efficiency, fixed frequency, Buck-Boost DC/DC converter that operates from input voltages above, below or equal to the output voltage.