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MAX77756 - 500mA Buck Regulator

General Description

The MAX77756 is a synchronous 500mA step-down DC-DC converter with integrated dual-input power multiplexer (MUX).

The converter operates on an input supply as low as 3.0V and as high as 24V.

Default output voltage is factory-programmed to either 1.8V, 3.3V, or 5.0V.

Key Features

  • Wide Input Power Supply.
  • 3V to 24V Supply Voltage.
  • 500mA (max) Output Current.
  • 1.8V, 3.3V, or 5.0V Factory-Set VOUT with Optional I2C Control: 1.5V to 7.5V in 50mV Steps.
  • External Feedback Resistor VOUT Option (1V to 99% VSUP).
  • Hardware or Software Enable.
  • Dual-Input Power MUX Replaces Common-Cathode Diode Arrays.
  • Automatic Ideal-Diode ORing Voltage Selector.
  • 250mΩ MOSFETs Minimize Power Consumption, BOM, and Sol.

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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.

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MAX77756 EVALUATION KIT AVAILABLE 24V Input, 500mA Buck Regulator with Dual-Input Power MUX General Description The MAX77756 is a synchronous 500mA step-down DC-DC converter with integrated dual-input power multiplexer (MUX). The converter operates on an input supply as low as 3.0V and as high as 24V. Default output voltage is factory-programmed to either 1.8V, 3.3V, or 5.0V. Output voltage is further adjustable through external resistors or an I2C serial interface. The dual-input power MUX selects the higher voltage from two different input sources to power the step-down converter. Control circuitry ensures that only one channel of the MUX is on at a time to prevent cross-conduction between input sources.