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MAX8664 - Step-Down Controller

General Description

The MAX8664 dual-output PWM controller is a low-cost, high-performance solution for systems requiring dual power supplies.

It provides two individual outputs that operate 180° out-of-phase to minimize input current ripple, and therefore, capacitance requirements.

Key Features

  • o ±0.8% Output Accuracy Over Load and Line o Operates from a Single 4.5V to 28V Supply o Simple Compensation for Any Type of Output Capacitor o Internal 6.5V Regulator for Gate Drive o Integrated Boost Diodes o Adjustable Output from 0.6V to 0.9 x VIN o Digital Soft-Start Reduces Inrush Current o 100kHz to 1MHz Adjustable Switching o 180° Out-of-Phase Operation Reduces Input Ripple Current o Overcurrent and Overvoltage Protection o External Reference Input for Second Controller o Prebiased Start.

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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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www.DataSheet4U.com 19-0796; Rev 0; 4/07 Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response General Description The MAX8664 dual-output PWM controller is a low-cost, high-performance solution for systems requiring dual power supplies. It provides two individual outputs that operate 180° out-of-phase to minimize input current ripple, and therefore, capacitance requirements. Built-in drivers are capable of driving external MOSFETs to deliver up to 25A output current from each channel. The MAX8664 operates from a 4.5V to 28V input voltage source and generates output voltages from 0.6V up to 90% of the input voltage on each channel. Total output regulation error is less than ±0.8% over load, line, and temperature.