Freescale Semiconductor Technical Data
MC33701 Rev 4.0, 05/2005
1.5 A Switch-Mode Power Supply with Linear Regulator
T...
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 LD...