MCZ34701

Freescale Semiconductor Technical Data Document Number: MC34701 Rev 7.0, 8/2007 1.5A 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 high performance 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., precisely maintained up/down power sequencing, ensuring the proper operation and protection of the CPU and power system. Features Operating voltage from 2.8V to 6.0V High-accuracy output voltages Fast transient response Switcher output current up to 1.5A Under-voltage 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 EW I2C is a trademark of Philips Corporation. 34701 POWER SUPPLY EW (Pb-FREE) SUFFIX 98AARH99137A 32-PIN SOICW ORDERING INFORMATION Device MCZ34701EW/R2 Temperature Range (TA) -40 to 85°C Package 32 SOICW 2.8 V to 6.0 V Input 34701 VIN2 VIN1 LDRV CS LDO LFB MPC8xxx...