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MAX8757 Datasheet Dual Power-Supply Controller

Manufacturer: Maxim Integrated (now Analog Devices)

Download the MAX8757 datasheet PDF. This datasheet also includes the MAX8716 variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (MAX8716_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

General Description

The MAX8716/MAX8717/MAX8756/MAX8757 are dual, step-down, interleaved, fixed-frequency, switch-mode power-supply (SMPS) controllers with synchronous rectification.

The MAX8716/MAX8717/MAX8756/MAX8757 are intended for main (5V/3.3V) power generation, while the MAX8756 is optimized for I/O power rails in batterypowered systems.

Fixed-frequency operation with optimal interleaving minimizes input ripple current from the lowest input voltages up to the 26V maximum input.

Overview

19-3569; Rev 2; 4/07 EVAALVUAAILTAIOBNLEKIT Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers MAX8716/MAX8717/MAX8756/MAX8757.

Key Features

  • o Fixed Switching Frequency 200kHz, 300kHz, or 500kHz 250kHz, 300kHz, or 400kHz (MAX8756 Only) o No Current-Sense Resistor Required o 40/60 Optimal Interleaving o Reduced Input-Capacitor Requirement o Output Voltage Fixed or Adjustable Outputs (Dual Mode™) 3.3V/5V Fixed or 1V to 5.5V Adjustable 1.5V/1.8V Fixed or 1V to 2.3V Adjustable (MAX8756 Only) o 4V to 26V Input Range o Independently Selectable PWM, Skip, and LowNoise Mode Operation o Soft-Start and Soft-Stop o 2V Precision Reference with 0.

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