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MC34712EP データシート(PDF) 1 Page - Freescale Semiconductor, Inc |
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MC34712EP データシート(HTML) 1 Page - Freescale Semiconductor, Inc |
1 / 23 page Document number: MC34712 Rev. 4.0, 5/2007 Freescale Semiconductor Advance Information * This document contains certain information on a new product. Specifications and information herein are subject to change without notice. © Freescale Semiconductor, Inc., 2007. All rights reserved. 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 mΩ 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 Packaging Designated by Suffix Code EP. Figure 1. 34712 Simplified Application Diagram SWITCH-MODE POWER SUPPLY EP SUFFIX 98ARL10577D 24-PIN QFN 34712 ORDERING INFORMATION Device Temperature Range (TA) Package MC34712EP/R2 -40 to 85°C 24 QFN VIN MCU PVIN VREFIN VIN VDDI FREQ GND SD STBY BOOT SW VOUT INV COMP VREFOUT PGND PG DDR MEMORY CONTROLER 34712 VDDQ DDR MEMORY CHIPSET VIN VREF VTT VDDQ VDDQ MEMORY BUS TERMINATING RESISTORS (3.0V TO 6.0V) |
同様の部品番号 - MC34712EP |
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同様の説明 - MC34712EP |
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