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参数资料
| 型号： | MP2482DN |
| 厂商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 9 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | MS-012BA, SOIC-8 |
| 文件页数： | 11/11页 |
| 文件大小： | 350K |
| 代理商： | MP2482DN |
MP2482 – 5A, 30V, 420KHZ STEP-DOWN CONVERTER
MP2482 Rev.1.2
www.MonolithicPower.com
9
10/22/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2009 MPS. All Rights Reserved.
PCB Layout Guide
PCB layout is very important to achieve stable
operation. Please follow these guidelines and
take Figure3 and 4 for references.
1) Keep the path of switching current short
and minimize the loop area formed by Input
cap, high-side MOSFET and schottky diode.
2) Keep the connection of schottky diode
between SW pin and input power ground
as short and wide as possible.
3) Ensure all feedback connections are short
and direct. Place the feedback resistors
and compensation components as close to
the chip as possible.
4) Route SW away from sensitive analog
areas such as FB.
5) Connect IN, SW, and especially GND
respectively to a large copper area to cool
the chip to improve thermal performance
and long-term reliability. For single layer
PCB, exposed pad should not be soldered.
R3
Cb
C3
R2
8
7
6
5
4
3
2
1
Figure 3—PCB Layout for Single Layer
Top Layer
Bottom Layer
Figure 4—PCB Layout for Double Layers
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