![Fibocom SC806 Скачать руководство пользователя страница 27](http://html1.mh-extra.com/html/fibocom/sc806/sc806_hardware-user-manual_2286856027.webp)
The copyright of this document is owned by Fibocom Wireless Inc., and the document shall not be replicated without approval.
SC806Hardware User ManualPage27 of 70
Power design is shown as follows:
Figure 3Power Design
Power supply filter capacitor design is shown in the following table:
Table6Power supply filter capacitor design
Recommended
capacitor
Application
Description
220uF x 2
Regulating capacitor
Reduce power fluctuations during module
operation, requiring low ESR capacitor
LDO or DCDC power requires not less than 440uF
capacitor
Battery power can be properly reduced to 100 ~
220uF capacitor
1uF,100nF
Digital signal noise
Filter clock and digital signal interference
39pF,33pF
700, 850/900 MHz
Filter low band radio frequency interference
18pF,8.2pF,
6.8pF
1700/1800/1900,2100/2300,250
0/2600MH
Filter
middle/high
band
radio
frequency
interference
The power voltage drop example is shown in the figure: