5.0 A, 1.0 MHz Integrated Dual Switch-Mode Power Supply

MC34717

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The NXP® MC34717 is a highly integrated, space-efficient, low cost, dual synchronous buck switching regulator with integrated N-channel power MOSFETs. It is a high performance dual point-of-load power supply with enhanced features for 3.3 V and 5 V environments.

Both channels can provide up to 5 A of continuous output current capability with high efficiency and tight output regulation

The second channel has the ability to track an external reference voltage in different configurations

The MC34717 offers you the flexibility of control, supervisory, and protection functions to allow 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

System Features

  • 2 buck regulators
  • 50 mOhm Integrated N-channel power MOSFETs
  • Input voltage operating range from 3 V to 6.0 V
  • 1% Accurate output voltages, ranging from 0.7 V to 3.6 V
  • The second output has voltage tracking capability in different configurations
  • Programmable switching frequency range from 200 kHz to 1 MHz
  • Programmable soft start timing
  • Over current limit and short circuit protection
  • Thermal shutdown
  • Output over-voltage and under-voltage detection
  • Active low power good output signal
  • Active low shutdown inputs
  • Output current 5 A
  • Output voltage 3.3 V

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