MC34704, Multiple Channel DC-DC Power Management IC - Data Sheet0 pages

Freescale Semiconductor
Technical Data

Document Number: MC34704
Rev. 8.0, 12/2014

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. This device is powered by SMARTMOS technology.
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.

MULTI-CHANNEL IC

EP SUFFIX (PB-FREE)
98ASA00712D
56-PIN QFN

Features

• 8 DC/DC (34704A) or 5 DC/DC (34704B) switching regulators with
up to 2% output voltage accuracy
• Dynamic voltage scaling on all regulators.
ORDERING INFORMATION
• Selectable output voltage or current regulation on REG8
Temperature
• I2C programmability
Device
Package
Range (TA)
• Output undervoltage and overvoltage detection for each regulator
MC34704AEP/R2
• Overcurrent limit detection and short-circuit protection for each
-20 °C to 85 °C
56 QFN EP
MC34704BEP/R2
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

34704A/B

VBKL

REG 8
REG 4

VDDR

2

I C COMM
REG 3
REG 2
REG 5

DDR
MEMORY

GND

VCORE
VIO1

LCD

MPU

VIO2

GND

PGND
*REG 1

+5V

*REG 6
*REG 7

VREF+ (5 to 16V)
VREF- (-5 to -9V)
* Available only in 34704A device

Figure 1. 34704 Simplified Application Diagram

© Freescale Semiconductor, Inc., 2008 - 2014. All rights reserved.