MC34717 datasheet(1/28 Pages) FREESCALE

Teilenummer	MC34717

Bauteilbeschribung	5.0 A 1.0 MHz Fully Integrated Dual Switch-Mode Power Supply

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Document Number: MC34717

Rev 4.0, 12/2008

Freescale Semiconductor

Advance Information

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

5.0 A 1.0 MHz Fully Integrated

Dual Switch-Mode Power

Supply

The 34717 is a highly integrated, space-efficient, low cost, dual

synchronous buck switching regulator with integrated N-channel

power MOSFETs. It is a high performance dual point-of-load (PoL)

power supply with many desired features for the 3.3 and 5.0 V

environments.

Both channels can provide up to 5.0 A of continuous output current

capability with high efficiency and tight output regulation. The second

channel has the ability to track an external reference voltage in

different configurations.

The 34717 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 26 Pin Exposed Pad QFN.

Features

•50 mΩ integrated N-channel power MOSFETs

• Input voltage operating range from 3.0 to 6.0 V

•

±1% accurate output voltages, ranging from 0.7 to 3.6 V

• The second output has voltage tracking capability in different

configurations

• Programmable switching frequency range from 200 kHz to

1.0 MHz

• Programmable soft start timing

• Over-current limit and short-circuit protection

• Thermal shutdown

• Output over-voltage and under-voltage detection

• Active low power good output signal

• Active low shutdown input

• Pb-free packaging designated by suffix code EP.

Figure 1. 34717 Simplified Application Diagram

DUAL SWITCH-MODE POWER SUPPLY

EP SUFFIX (PB_FREE)

98ASA10728D

26-PIN QFN

34717

ORDERING INFORMATION

Device

Temperature

Range (TA)

Package

MC34717EP/R2

-40 to 85°C

26 QFN

VIN

PVIN1

3.0 TO 6.0 V

BOOT1

SW1

INV1

COMP1

VOUT1

GND

VREFIN

VDDI

FREQ

PG

34717

VIN

VOUT1

PGND1

PVIN2

BOOT2

SW2

INV2

COMP2

VOUT2

PGND2

ILIM1

VMASTER

ILIM2

SD

MCU

VOUT2

VOUT1

VIN

Optional

Ähnliche Beschreibung - MC34717

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
Freescale Semiconductor...	34717	651Kb / 25P	5.0 A 1.0 MHz Fully Integrated Dual Switch-Mode Dual Switch-Mode Power Supply
Freescale Semiconductor...	MC34713	587Kb / 23P	5.0 A 1.0 MHz Fully Integrated Single Switch-Mode Power Supply
NXP Semiconductors	KT34717UG	1Mb / 20P	Using the 5.0 A 1.0 MHz Fully Integrated Dual Switch-Mode Power Supply Rev. 3.0, 1/2009
Freescale Semiconductor...	MC34712	547Kb / 24P	3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply
	MC34164-3	477Kb / 23P	3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply
	34713	510Kb / 21P	5.0 A 1.0MHz Fully Integrated Single Switch-Mode Power Supply
NXP Semiconductors	KT34712UG	2Mb / 16P	Using the 3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply Rev. 4.0, 1/2009
Freescale Semiconductor...	MC34716	772Kb / 27P	1.0 MHz Dual Switch-Mode DDR Power Supply
Freescale Semiconductor...	34716	664Kb / 25P	1.0 MHz Dual Switch-Mode DDR Power Supply
NXP Semiconductors	KT34716UG	1,005Kb / 17P	Using the 1.0 MHz Dual Switch-Mode DDR Power Supply Rev. 3.0, 1/2009

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