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
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