MC34704 Datasheet, PDF (1/49 Pages) Freescale Semiconductor, Inc – Multiple Channel DC-DC Power Management IC

Freescale Semiconductor
Advance Information
Document Number: MC34704
Rev. 3, 7/2008
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.
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.
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.
• Selectable voltage mode control or current mode control on REG8
• I²C programmability
• Output under-voltage and over-voltage detection for each
regulator
• 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
MULTI-CHANNEL IC
EP SUFFIX (PB-FREE)
98ASA10751D
56-PIN QFN
ORDERING INFORMATION
Device
MC34704AEP/R2
MC34704BEP/R2
Temperature
Range (T_A)
-20°C to 85°C
Package
56 QFN EP
34704A/B
REG 8
REG 4
REG 3
REG 2
REG 5
PGND
*REG 1
*REG 6
*REG 7
V_BKL
V_DDR
DDR
I²C COMM ^MEMORY
GND
V_CORE
V_IO1
V_IO2
MPU
GND
LCD
+5V
VREF+ (5 to 16V)
VREF- (-5 to -9V)
* Available only in 34704A device
Figure 1. 34704 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. All rights reserved.