1.0 MHz Dual Switch-Mode DDR Power Supply

MC34716

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The NXP® MC34716 is a highly integrated, space-efficient, low cost, dual synchronous buck switching regulator with integrated N-channel power MOSFETs.

  • High performance point-of-load (PoL) power supply with its second output having the ability to track an external reference voltage
  • Provides a full power supply solution for DDR memories
  • Channel one provides a source only 5 A drive capability, channel two can sink and source up to 3 A; both are highly efficient with tight output regulation
  • Has a buffered output reference voltage to the memory chipset
  • Offers flexibility of many control, supervisory, and protection functions to allow for easy implementation of complex designs

Product Details

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Block Diagram

Freescale MC34716 Switch Regulator Block Diagram

NXP<sup>&#174;</sup> MC34716 Switch Regulator Block Diagram
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Features

System Features

  • Integrated N-channel power MOSFETs
  • Input voltage operating range from 3 V to 6 V
  • The second output tracks 1/2 an external reference voltage
  • 1% Accurate buffered reference output voltage
  • Programmable switching frequency range from 200 kHz to 1 MHz
  • Programmable soft start timing for channel one
  • Over current limit and short circuit protection on both channels
  • Thermal shutdown
  • Output over-voltage and under-voltage detection
  • Active low power good output signal
  • Active low standby and shutdown inputs
  • 2 buck regulators
  • Output current 3 A
  • Output voltage 1.5 V

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