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Freescale Semiconductor Electronic Components Datasheet



MC34713

Fully Integrated Single Switch-Mode Power Supply



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MC34713 pdf
Freescale Semiconductor
Advance Information
Document Number: MC34713
Rev. 4.0, 5/2007
5.0 A 1.0 MHz Fully Integrated
Single Switch-Mode Power
Supply
34713
The 34713 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 in
different configurations.
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
• 45 mIntegrated 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 3.6 V
• Voltage Tracking Capability in different configurations.
• Programmable Switching Frequency Range from 200 kHz to
1.0 MHz with a default of 1.0 MHz
• Programmable Soft Start Timing
• Over Current Limit and Short Circuit Protection
www.DataSheet4U.com • Thermal Shutdown
• Output Overvoltage and Undervoltage Detection
• Active Low Power Good Output Signal
• Active Low Shutdown Input
• Pb-Free Packaging Designated by Suffix Code EP.
SWITCH-MODE POWER SUPPLY
EP SUFFIX
98ARL10577D
24-PIN QFN
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC34713EP/R2
-40 to 85°C
24 QFN
(3.0V TO 6.0V) VIN
VMASTER
34713
VIN PVIN
VREFIN
PGND
VDDI
BOOT
SW
INV
VOUT
FREQ
ILIM
GND
COMP
VOUT
PG
SD
VIN
Figure 1. 34713 Simplified Application Diagram
MICROCONTROLLER
DSP,
FPGA,
ASIC
* 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.



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MC34713 pdf
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
SD
PG
FREQ
ILIM
VDDI
VREFIN
GND
Thermal
Monitoring
System
M1 Reset
ILIMIT
System
Control
Internal
Voltage
Regulator
VDDI
M2
VIN
BOOT
Prog Frequency
Discharge
Oscillator
Prog Soft Start
ISENSE
VDDI
Current
Monitoring
VIN VBOOT
PVIN
Buck
Control
Logic FSW
M3
Gate ISENSE
Driver
SW
ILIMIT
PWM
Comparator
M4
PGND
Bandgap
Regulator
VBG
Ramp
Generator
Error
Amplifier
COMP
INV
Reference
VBG
Selection
M5
VOUT
Discharge
Figure 2. 34713 Simplified Internal Block Diagram
34713
2
Analog Integrated Circuit Device Data
Freescale Semiconductor



Part Number MC34713
Description Fully Integrated Single Switch-Mode Power Supply
Maker Freescale Semiconductor - Freescale Semiconductor
Total Page 21 Pages
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