1.0 MHz Dual Switch-Mode DDR Power Supply

MC34716

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 5.0 A drive capability, channel two can sink and source up to 3.0 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

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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

  • Integrated N-Channel Power MOSFETs
  • Input Voltage Operating Range from 3.0 V to 6.0 V
  • Accurate Output Voltages, Ranging from 0.7 V to 3.6 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 1.0 MHz
  • Programmable Soft Start Timing for Channel One
  • Over Current Limit and Short Circuit Protection on Both Channels
  • Thermal Shutdown
  • Output Overvoltage and Undervoltage Detection
  • Active Low Power Good Output Signal Active Low Standby and Shutdown Inputs
  • This product is included in NXP®.s product longevity program, with assured supply for a minimum of 10 years after launch

Key Parametrics

  • Number of Buck Regulators
    2
  • Number of Boost Regulators
    0
  • Supply Voltage [Min to Max] (V)
    3.0 to 6
  • Output Voltage (V)
    1.5
  • Output Current (A)
    3

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