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34701 - Switch-Mode Power Supply

Description

A functional description of each pin can be found in the FUNCTIONAL PIN DESCRIPTION section beginning on page 16.

Pin 1 Pin Name FREQ Formal Name Oscillator Frequency Definition This switcher frequency selection pin can be adjusted by connecting external resistor RF to the FREQ pin.

Features

  • and to allow space-efficient, compact design. The 34701 incorporates many advanced features; e. g. , precisely maintained up/down power sequencing, ensuring the proper operation and protection of the CPU and power system. Features.
  • Operating Voltage from 2.8 V to 6.0 V High-Accuracy Output Voltages Fast Transient Response Switcher Output Current Up to 1.5 A Undervoltage Lockout and Overcurrent Protection Enabl.

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Full PDF Text Transcription

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www.DataSheet4U.com Freescale Semiconductor Technical Data Document Number: MC34701 Rev 6.0, 2/2007 1.5 A Switch-Mode Power Supply with Linear Regulator The 34701 provides the means to efficiently supply the Freescale Power QUICC™ I, II, and other families of Freescale microprocessors and DSPs. The 34701 incorporates a highperformance switching regulator, providing the direct supply for the microprocessor’s core, and a low dropout (LDO) linear regulator control circuit provides the microprocessor I/O and bus voltage. The switching regulator is a high-efficiency synchronous buck regulator with integrated N-channel power MOSFETs to provide protection features and to allow space-efficient, compact design. The 34701 incorporates many advanced features; e.g.
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