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MAX1709 - 4A / Low-Noise / High-Frequency / Step-Up DC-DC Converter

General Description

The MAX1709 sets a new standard of space savings for high-power, step-up DC-DC conversion.

It delivers up to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to 5.5V) output, using an on-chip power MOSFET from a +0.7V to +5V supply.

Key Features

  • programmable soft-start and current limit for design flexibility and optimum performance with batteries. The maximum RMS switch current rating is 10A. For a device with a lower current rating, smaller size, and lower cost, refer to the MAX1708 data sheet. o On-Chip 10A Power MOSFET o 5V, 4A Output from a 3.3V Input o Fixed 3.3V or 5V Output Voltage or Adjustable (2.5V to 5.5V) o Input Voltage Range Down to 0.7V o Low Power Consumption 1mW Quiescent Power 1µA Current in Shutdown Mode o Low-Noise,.

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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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19-1724; Rev 0; 5/00 4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter General Description The MAX1709 sets a new standard of space savings for high-power, step-up DC-DC conversion. It delivers up to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to 5.5V) output, using an on-chip power MOSFET from a +0.7V to +5V supply. Fixed-frequency PWM operation ensures that the switching noise spectrum is constrained to the 600kHz fundamental and its harmonics, allowing easy postfiltering for noise reduction. External clock synchronization capability allows for even tighter noise spectrum control. Quiescent power consumption is less than 1mW to extend operating time in battery-powered systems.