器件名称:
34712
功能描述:
3.0
文件大小:
477.09KB 共23页
简 介:
Freescale Semiconductor Advance Information Document number: MC34712 Rev. 4.0, 5/2007 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. Features 45 m Integrated N-Channel Power MOSFETs Input Voltage Operating Range from 3.0 V to 6.0 V ±1 % Accurate Output Voltage, Ranging from 0.7 V 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 Overvoltage and Undervoltage Detection Active Low Power Good Output Signal Active Low Standby and Shutdown Inputs Pb-Free Packag……
