参数资料
型号: MC34708VM
厂商: Freescale Semiconductor
文件页数: 35/159页
文件大小: 0K
描述: IC POWER MANAGEMENT 206MAPBGA
标准包装: 160
应用: 通用
电源电压: 1.8 V ~ 4.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 206-LFBGA
供应商设备封装: 206-MAPBGA(13x13)
包装: 托盘
Functional Block Description
7.5
Power Generation
The MC34708 PMIC provides reference and supply voltages for the application processor as well as peripheral devices.
Six buck (step down) converters and one boost (step up) converter are included. One of the buck regulators can be configured
in dual phase, single phase mode, or operate as separate independent outputs (in this case, there are six buck converters). The
buck converters provide the supply to processor cores and to other low voltage circuits such as IO and memory. Dynamic voltage
scaling is provided to allow controlled supply rail adjustments for the processor cores and/or other circuitry. The boost converter
supplies the VUSB regulator for the USB PHY on the processor. The VUSB regulator is powered from the boost to ensure
sufficient headroom for the LDO through the normal discharge range of the main battery.
Linear regulators could be supplied directly from the battery or from one of the switching regulator, and provide supplies for IO
and peripherals, such as audio, camera, Bluetooth, Wireless LAN, etc. Naming conventions are suggestive of typical or possible
use case applications, but the switching and linear regulators may be utilized for other system power requirements within the
guidelines of specified capabilities.
Four general purpose I/Os are available. When configured as inputs they can be used as external interrupts.
7.5.1
Power Tree
Refer to the representative tables and text specifying each supply for information on performance metrics and operating ranges.
Table 22 summarizes the available power supplies.
Table 22. Power Tree Summary
Supply
SW1
SW2
SW3
SW4A
SW4B
SW5
SWBST
VSRTC
VPLL
VREFDDR
VDAC
VUSB2
VGEN1
VGEN2
VUSB
Purpose (typical application)
Buck regulator for processor VDDGP domain
Buck regulator for processor VCC domain
Buck regulator for processor VDD domain and peripherals
Buck regulator for DDR memory and peripherals
Buck regulator for DDR memory and peripherals
Buck regulator for I/O domain
Boost regulator for USB OTG
Secure Real Time Clock supply
Quiet Analog supply
DDR Ref supply
TV DAC supply, external PNP
VUSB/peripherals supply, internal PMOS
VUSB/peripherals external PNP
General peripherals supply #1
General peripherals supply #2, internal PMOS
General peripherals supply #2, external PNP
USB Transceiver supply
Output Voltage (in V)
0.650 - 1.4375
0.650 - 1.4375
0.650 - 1.425
1.200 – 1.85: 2.5/3.15
1.200 – 1.85: 2.5/3.15
1.200 – 1.85
5.00/5.05/5.10/5.15
1.2
1.2/1.25/1.5/1.8
0.6-0.9
2.5/2.6/2.7/2.775
2.5/2.6/2.75/3.0
2.5/2.6/2.75/3.0
1.2/1.25/1.3/1.35/1.4/1.45/1.5/1.55
2.5/2.7/2.8/2.9/3.0/3.1/3.15/3.3
2.5/2.7/2.8/2.9/3.0/3.1/3.15/3.3
3.3
Load Capability (in mA)
2000
1000
500
500
500
1000
380
0.05
50
10
250
65
350
250
50
250
100
MC34708
Analog Integrated Circuit Device Data ?
35
Freescale Semiconductor
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