MC34701 Datasheet (Freescale Semiconductor) - 1.5 A Switch-Mode Power Supply with Linear Regulator

MC34701, 1.5 A Switch-Mode Power Supply with Linear Regulator

A functional description of each terminal can be found in the FUNCTIONAL TERMINAL DESCRIPTION section beginning on page 15.

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

Freescale Semiconductor Technical Data MC33701 Rev 4.0, 05/2005 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 providing the microprocessor I/O and bus voltage.

The switch

MC34701 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