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参数资料
| 型号： | LM2742 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages |
| 中文描述： | N沟道场效应管同步降压稳压控制器输出电压低 |
| 文件页数： | 5/22页 |
| 文件大小： | 619K |
| 代理商： | LM2742 |
Application Information (Continued)
FET Conduction Loss
P
Cn = 0.533W
Input Capacitor Loss
4.28
2*0.018/2 = 0.164W
Input Inductor Loss
P
Lin =I
2
in * DCRinput-L
2.82
2*0.007 = 0.055W
Output Inductor Loss
P
Lout =I
2
o * DCRoutput-L
10
2*0.004 = 0.4W
System Efficiency
Example Circuits
This circuit and the one featured on the front page have been
designed to deliver high current and high efficiency in a small
package, both in area and in height The tallest component in
this circuit is the inductor L1, which is 6mm tall. The com-
pensation has been designed to tolerate input voltages from
5 to 16V.
20087503
FIGURE 2. 5V-16V to 3.3V, 10A, 300kHz
LM2742
www.national.com
13
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| LM2742MTC | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2742MTC NOPB | 制造商:Texas Instruments 功能描述:Bulk |
| LM2742MTC/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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| LM2742MTCX | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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