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參數(shù)資料
| 型號(hào)： | 1771U |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Low-Voltage Synchronous Buck Controller with Precision Enable and No External Compensation |
| 中文描述： | 低電壓同步降壓控制器，具有高精度允許任何外部補(bǔ)償 |
| 文件頁數(shù)： | 6/17頁 |
| 文件大?。?/td> | 772K |
| 代理商： | 1771U |
Typical Performance Characteristics
All curves taken at VIN = 3.3V with configuration in typical
application circuit shown in Application Information section of this datasheet. T
J
= 25C, unless otherwise
specified. (Continued)
Quiescent Current vs Temperature
Deadtime vs Temperature
20189016
20189015
Efficiency vs I
OUT
(LM1771T)
(V
IN
= 5V, V
OUT
= 1.8V, F
SW
= 545kHz)
Efficiency vs I
OUT
(LM1771U)
(V
IN
= 5V, V
OUT
= 2.5V, F
SW
= 379kHz)
20189004
20189003
Efficiency vs I
(LM1771U)
(V
IN
= 5V, V
OUT
= 3.3V, F
SW
= 500kHz)
Efficiency vs I
(LM1771S)
(V
IN
= 5V, V
OUT
= 1.2V, F
SW
= 727kHz)
20189005
20189006
L
www.national.com
6
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