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參數(shù)資料
| 型號： | LM3743 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Controller for Low Output Voltages |
| 中文描述： | N溝道FET的同步降壓控制器，用于低輸出電壓 |
| 文件頁數(shù)： | 22/23頁 |
| 文件大?。?/td> | 1145K |
| 代理商： | LM3743 |
Application Information
(Continued)
power components must be kept close together. The longer
the paths that connect them, the more they act as antennas,
radiating unwanted EMI.
Minimize the Switch Node Copper
The plane that connects the power FETs and output inductor
together radiates more EMI as it gets larger. Use just enough
copper to give low impedance to the switching currents.
Kelvin Traces For Sense Lines
The drain and the source of the high-side FET should be
connected as close as possible to the V
filter resistor (R6)
and the SW pin and each pin should connect with a separate
trace. The feedback trace should connect the positive node
of the output capacitor and connect to the top feedback
resistor (R2). Keep this trace away from the switch node and
from the output inductor. If driving the COMP pin low with a
signal BJT or MOSFET make sure to keep the signal tran-
sistor as close as possible to the pin and keep the trace
away from EMI radiating nodes and components.
L
www.national.com
22
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| LM3743MM-1000 | N-Channel FET Synchronous Buck Controller for Low Output Voltages |
| LM3743MM-300 | N-Channel FET Synchronous Buck Controller for Low Output Voltages |
| LM3743MMX-1000 | N-Channel FET Synchronous Buck Controller for Low Output Voltages |
| LM3743MMX-300 | N-Channel FET Synchronous Buck Controller for Low Output Voltages |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3743-1000EVAL | 功能描述:電源管理IC開發(fā)工具 LM3743 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM3743-300EVAL | 功能描述:電源管理IC開發(fā)工具 LM3743 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM3743MM-1000 | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| LM3743MM-1000/NOPB | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| LM3743MM-300 | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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