Datasheet > 34704_11

34704_11

更新时间： 2022-05-14 02:08:27

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		/
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描述
Multiple Channel DC-DC Power Management IC

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34704_11 数据手册

Document Number: MC34704

Rev. 5.0, 2/2011

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 5.5 V) 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 7x7 mm, Pb-free, QFN56 and is capable

of operating at a switching frequency of up to 2.0 MHz. This makes it

possible to reduce external component size and to implement full

space efficient power management solutions.

EP SUFFIX (PB-FREE)

98ASA10751D

Features

56-PIN QFN

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

up to ±2% output voltage accuracy

• Dynamic voltage scaling on all regulators.

• Selectable output voltage or current regulation on REG8

• I²C programmability

ORDERING INFORMATION

Temperature

Package

Device

Range (T )

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

regulator

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

• 5.0 µA maximum shutdown current (All regulators are off, 5.5 V 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...54

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