MC34702

www.DataSheet4U.com Freescale Semiconductor Technical Data Document Number: MC34702 Rev 6.0, 2/2007 3.0 A Switch-Mode Power Supply with Linear Regulator The 34702 provides the means to efficiently supply the Freescale Power QUICC™ I, II, and other families of Freescale microprocessors and DSPs. The 34702 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 34702 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 3.0 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. 34702 POWER SUPPLY INTEGRATED CIRCUIT EK (PB-FREE) SUFFIX 98AARH99137A 32-PIN SOICW ORDERING INFORMATION Device MC34702EK/R2 Temperature Range (TA) -40 to 85°C Package 32 SOICW 2.8 V to 6.0 V Input...