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HM3440 Datasheet Synchronous Buck-boost DC/dc Regulator

Manufacturer: H&M Semiconductor

Overview: +0 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.

The devices are suitable for single lithium-ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range.

The switching frequencies up to 1.5 MHz could be fixed by employing an external resistor, and the oscillator could be synchronized to an external clock.

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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HM3440 Distributor