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參數資料
| 型號： | LM3075MTCX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | High Efficiency, Synchronous Current Mode Buck Controller |
| 中文描述： | SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | TSSOP-20 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 857K |
| 代理商： | LM3075MTCX |
LM3075
High Efficiency, Synchronous Current Mode Buck
Controller
General Description
The LM3075 is a current mode control, synchronous buck
controller IC. Use of synchronous rectification and pulse-
skipping operation at light load achieves high efficiency over
a wide load range. Fixed frequency operation can be ob-
tained by disabling the pulse-skipping mode. Current mode
control assures excellent line and load regulation and a wide
loop bandwidth for fast response to load transients.
Current mode control can be achieved by either sensing
across the high side NFET or a sense resistor. The switching
frequency can be selected as either 200 kHz or 300 kHz
from an internal clock.
The LM3075 is available with an adjustable output in a
TSSOP-20 package.
Features
n
Input voltage range of 4.5V-36V
n
Current Mode Control
n
Skip mode operation available
n
Cycle by cycle current limit
n
1.24V
±
2% Reference
Applications
n
Automotive Power Supplies
n
Distributed Power Systems
Typical Application Circuit
20162301
September 2005
L
2005 National Semiconductor Corporation
DS201623
www.national.com
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