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| 型号： | MC34704BEPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 1/54页 |
| 文件大小： | 0K |
| 描述： | IC PWR MNGMT DC-DC MULT 56-QFN |
| 特色产品： | MC34704 Multi-channel Power Management IC (PMIC) |
| 标准包装： | 1 |
| 应用： | 处理器 |
| 电流 - 电源： | 86mA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-VFQFN 裸露焊盘 |
| 供应商设备封装： | 56-QFN-EP（7x7） |
| 包装： | 标准包装 |
| 产品目录页面： | 809 (CN2011-ZH PDF) |
| 其它名称： | MC34704BEPR2DKR |
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Freescale Semiconductor
Technical Data
Multiple Channel DC-DC Power
Management IC
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.
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.
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 output voltage or current regulation on REG8
Document Number: MC34704
Rev. 7.0, 12/2011
34704
MULTI-CHANNEL IC
EP SUFFIX (PB-FREE)
98ASA10751D
56-PIN QFN
ORDERING INFORMATION
? I 2 C programmability
? Output under-voltage and over-voltage detection for each
regulator
? Over-current limit detection and short-circuit protection for each
Device
MC34704AEP/R2
MC34704BEP/R2
Temperature
Range (T A )
-20°C to 85°C
Package
56 QFN EP
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
REG 8
REG 4
V BKL
V DDR
DDR
I C COMM
REG 3
2
V CORE
MEMORY
GND
REG 2
REG 5
V IO1
V IO2
MPU
GND
LCD
PGND
*REG 1
*REG 6
*REG 7
+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 - 2011. All rights reserved.
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