MC34713EP

Document Number: MC34713 Freescale Semiconductor Rev. 6.0, 11/2014 Advance Information 5.0 A 1.0 MHz Fully Integrated Single Switch-Mode Power 34713 Supply The 34713 is a highly integrated, space efficient, low cost, single synchronous buck switching regulator with integrated N-channel SWITCH-MODE POWER SUPPLY power MOSFETs. It is a high performance point-of-load (PoL) power supply with the ability to track an external reference voltage in different configurations. This device is powered by SMARTMOS technology. Its high efficient 5.0 A continuous output current capability combined with its voltage tracking/sequencing ability and tight output regulation, makes it ideal as a single power supply. The 34713 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 EP SUFFIX 50 m integrated N-channel power MOSFETs 98ASA00474D Input voltage operating range from 3.0 to 6.0 V 24-PIN QFN 1% accurate output voltage, ranging from 0.7 to 3.6 V Voltage tracking capability in different configurations. ORDERING INFORMATION Programmable switching frequency range from 200 kHz to 1.0 MHz with a default of 1.0 MHz Temperature Package Device Programmable soft start timing Range (T ) A Over-current limit and short-circuit protection MC34713EP/R2 -40 C to 85 C 24 QFN Thermal shutdown Output over-voltage and under-voltage detection Active low power good output signal Active low shutdown input. (3.0 TO 6.0 V) VIN 34713 V MASTER VIN PVIN BOOT VREFIN V OUT SW PGND INV VDDI FREQ COMP VIN VOUT MICROCONTROLLER ILIM DSP, FPGA, PG ASIC GND SD Figure 1. 34713 Simplified Application Diagram * This document contains certain information on a new product. Specifications and information herein are subject to change without notice. Freescale Semiconductor, Inc., 2008-2014. All rights reserved.INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM SD Internal Thermal VIN Voltage Monitoring Regulator PG M2 System System Reset Control M1 V DDI BOOT I LIMIT Discharge V V IN BOOT PVIN Buck Oscillator Control F Prog Frequency SW M3 Logic FREQ Gate I SENSE SW Driver Prog Soft Start ILIM Current I LIMIT I Monitoring SENSE M4 PWM V DDI Comparator PGND VDDI V Ramp COMP BG Bandgap Generator Error Regulator Amplifier INV VREFIN Reference Selection V BG M5 VOUT GND Discharge Figure 2. 34713 Simplified Internal Block Diagram 34713 Analog Integrated Circuit Device Data 2 Freescale Semiconductor + +