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MC34701

Freescale Semiconductor
Part Number MC34701
Manufacturer Freescale Semiconductor
Description 1.5 A Switch-Mode Power Supply with Linear Regulator
Published Nov 18, 2005
Detailed Description Freescale Semiconductor Technical Data MC33701 Rev 4.0, 05/2005 1.5 A Switch-Mode Power Supply with Linear Regulator T...
Datasheet PDF File MC34701 PDF File

MC34701
MC34701

Overview
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 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.
, 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 Enable Inputs and Programmable Watchdog Timer Voltage Margining via I2C™ Bus Reset with Programmable Power-ON Delay Pb-Free Packaging Designated by Suffix Code EK I2C is a trademark of Philips Corporation.
34701 POWER SUPPLY INTEGRATED CIRCUIT EK (Pb-FREE) SUFFIX 98AARH99137A 32-TERMINAL SOICW ORDERING INFORMATION Device MC34701EK/R2 Temperature Range (TA) -40 to 85°C Package 32 SOICW 2.
8 V to 6.
0 V Input 34701 VIN2 VBD VBST RT VIN1 LDRV CS LDO LFB MPC8xxx RST BOOT SW VOUT PGND INV VDDI VBST Adjustable: 0.
8 V to VIN Dropout PORESET Other Circuits Adjustable: 0.
8 V to VIN Dropout VDDH (I/Os) ADDR SDA SCL GND EN1 EN2 CLKSYN CLKSEL Optional FREQ VDDL (Core) Figure 1.
34701 Simplified Application Diagram * This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc.
, 2005.
All rights reserved.
INTERNAL BLOCK DIAGRAM ...


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