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| 型号： | LTC4081EDD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 22/24页 |
| 文件大小： | 0K |
| 描述： | IC USB POWER MANAGER 10-DFN |
| 标准包装： | 121 |
| 功能： | 电源管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 3.75 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
LTC4081
APPLICATIO S I FOR ATIO
There are several types of ceramic capacitors with consider-
ably different characteristics. Y5V ceramic capacitors have
apparently higher packing density but poor performance
over their rated voltage or temperature ranges. Under
given voltage and temperature conditions, X5R and X7R
ceramic capacitors should be compared directly by case
size rather than speci?ed value for a desired minimum
capacitance. Some manufacturers provide excellent data on
their websites about achievable capacitance. Table 2 shows
a list of several ceramic capacitor manufacturers.
Table 2. Recommended Ceramic Capacitor Manufacturers
Board Layout Considerations
To be able to deliver maximum charge current under all
conditions, it is critical that the exposed metal pad on the
backside of the LTC4081’s package has a good thermal
contact to the PC board ground. Correctly soldered to a
2500mm 2 double-sided 1 oz. copper board, the LTC4081
has a thermal resistance of approximately 43°C/W. Failure
to make thermal contact between the exposed pad on the
backside of the package and the copper board will result
in thermal resistance far greater than 43°C/W.
Furthermore due to its high frequency switching circuitry,
Taiyo Yuden
AVX
Murata
TDK
www.t-yuden.com
www.avxcorp.com
www.murata.com
www.tdk.com
it is imperative that the input capacitor, BAT pin capaci-
tor, inductor, and the output capacitor be as close to the
LTC4081 as possible and that there is an unbroken ground
plane under the LTC4081 and all of its high frequency
components.
4081f
22
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相关代理商/技术参数 |
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|---|---|
| LTC4081EDD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA Li-Ion Charger with NTC Input and 300mA Synchronous Buck |
| LTC4085 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Battery Charger/USB Power Manager |
| LTC4085-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:USB Power Manager with Ideal Diode Controller and 4.1V Li-Ion Charger |
| LTC4085-3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:USB Power Manager with Ideal Diode Controller and 3.95V Li-Ion Charger |
| LTC4085EDE | 制造商:Linear Technology 功能描述:USB Power Manager 14-Pin DFN EP |
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