Datasheet > 34704_09

34704_09

更新时间： 2022-12-14 19:15:09

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飞思卡尔 - FREESCALE		/
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Multiple Channel DC-DC Power Management IC

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34704_09 数据手册

Document Number: MC34704

Rev. 4.0, 6/2009

Freescale Semiconductor

Technical Data

Multiple Channel DC-DC Power

Management IC

34704

The 34704 is a multi-channel Power Management IC (PMIC) used

to address power management needs for various multimedia

application microprocessors. Its ability to provide either 5 or 8

independent output voltages with a single input power supply (2.7

and 5.5V) together with its high efficiency, make it ideal for portable

devices powered up by Li-Ion/polymer batteries or for USB powered

devices as well.

MULTI-CHANNEL IC

The 34704 is housed in a 7x7mm, Pb-free, QFN56 and is capable

of operating at a switching frequency of up to 2MHz. This makes it

possible to reduce external component size and to implement full

space efficient power management solutions.

EP SUFFIX (PB-FREE)

98ASA10751D

Features

• 8 DC/DC (34704A) or 5 DC/DC (34704B) switching regulators with

up to ±2% output voltage accuracy

56-PIN QFN

• Dynamic voltage scaling on all regulators.

• Selectable voltage mode control or current mode control on REG8

• I²C programmability

• Output under-voltage and over-voltage detection for each

regulator

ORDERING INFORMATION

Temperature

Package

Device

Range (T )

MC34704AEP/R2

MC34704BEP/R2

-20°C to 85°C

56 QFN EP

• Over-current limit detection and short-circuit protection for each

regulator

• Thermal limit detection for each regulator, except REG7

• Integrated compensation for REG1, REG3, REG6, and REG8

• 5.0µA maximum shutdown current (All regulators are off, 5.5V VIN)

• True cutoff on all of the boost and buck-boost regulators

• Pb-free packaging designated by suffix code EP

34704A/B

BKL

REG 8

REG 4

DDR

MEMORY

I²C COMM

GND

CORE

REG 3

IO1

REG 2

REG 5

LCD

MPU

IO2

GND

+5V

PGND

*REG 1

VREF+ (5 to 16V)

VREF- (-5 to -9V)

*REG 6

*REG 7

* Available only in 34704A device

Figure 1. 34704 Simplified Application Diagram

Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

12 3 4 5 6 7...49

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