 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
EFP01 数据表(PDF) 31 Page - Silicon Laboratories |
|
|
|||||||||||||||||||||||||||||
EFP01 数据表(HTML) 31 Page - Silicon Laboratories |
|
|
31 / 158 page  4.1.2 Wired Buck with LDO C Configuration (EFP0103 & EFP0104) The wired buck with LDO configuration is targeted at batteries with a nominal voltage above 2.5V where the input voltage may ap- proach the buck converter output voltage. In this mode, DCDC A bucks the supply voltage to a lower voltage until the supply voltage approaches the VOA output voltage. At that point, the converter dynamically switches to use the LDO instead to power the VOA output. Note that in this mode, LDO C is wired in parallel with the VOA output, and thus not available as an independent LDO. The wired buck with LDO configuration is suitable for a wide range of batteries and input supplies. For example: • Single lithium (Li/MnO2) CR2032 coin-cells (1.8 to 3.2V) • Single lithium thionyl chloride (Li/SOCl2) primary cell (3.0 to 3.65V) • Single li-ion/li-polymer (typically LiCoO2) rechargeable batteries (2.7 to 4.35V) • Single lithium iron phosphate (LiFePO4) rechargeable battery (2.5 to 3.65V) • Line power / USB (< 5.5V) The supported operating mode settings for each converter in this configuration are shown below: Table 4.2. Supported Operating Mode Settings Converter / LDO Operating Mode Bitfield Supported Modes DCDC A BB_CTRL3.BB_MODE WiredBuckLDO DCDC B BK_CTRL1.BK_MODE Disabled, BuckOnly, BuckLDO, or LDOOnly LDO C LDOC_CTRL.LDOC_ENA_SA Disabled Typical power supply connections for a wired buck with LDO configuration are show in the following figure. ` Main Supply + – VDD VOA (1.8V–5.5V) 10µF 2.2µH 2.2µH VDDB VOA SW VOC LB LDO C VOA Buck DC-DC B Boost DC-DC A Buck DC-DC A VOB LDO B LA2 LA1 Low Voltage VDDA 0.1µF ` VOB VIO I2C SDA I2C SCL IRQ Control 10µF 0.1µF 0.1µF VIO 0.1µF ` To Host MCU 2.2uF for EFP0104 10uF for EFP0103 Figure 4.2. Wired Buck with LDO C Configuration EFP01 Energy Friendly PMIC Family Data Sheet Typical Connection Diagrams silabs.com | Building a more connected world. Rev. 1.3 | 31 |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
