MC34712中文资料飞思卡尔数据手册PDF规格书

3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply

The 34712 is a highly integrated, space efficient, low cost, single synchronous buck switching regulator with integrated N-channel power MOSFETs. It is a high performance point-of-load (PoL) power supply with the ability to track an external reference voltage.

Its high efficient 3.0 A sink and source capability combined with its voltage tracking/sequencing ability and tight output regulation, makes it ideal to provide the termination voltage (VTT) for modern data buses such as Double-Data-Rate (DDR) memory buses. It also provides a buffered output reference voltage (VREF) to the memory chipset

The 34712 offers the designer the flexibility of many control, supervisory, and protection functions to allow for easy implementation of complex designs. It is housed in a Pb-free, thermally enhanced, and space efficient 24 Pin Exposed Pad QFN.

特性 Features

• 50 mΩ integrated N-channel power MOSFETs

• Input voltage operating range from 3.0 to 6.0 V

• ±1 Accurate output voltage, ranging from 0.7 to 1.35 V

• ±1 Accurate buffered reference output voltage

• Programmable switching frequency range from 200 kHz to 1.0 MHz with a default of 1.0 MHz

• Over-current limit and short-circuit protection

• Thermal shutdown

• Output over-voltage and under-voltage detection

• Active low power good output signal

• Active low standby and shutdown inputs

• Pb-free packaging designated by suffix code EP.