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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： | 2/11页 |
| 文件大小： | 350K |
| 代理商： | MP2482DN |
MP2482 – 5A, 30V, 420KHZ STEP-DOWN CONVERTER
MP2482 Rev.1.2
www.MonolithicPower.com
10
10/22/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2009 MPS. All Rights Reserved.
External Bootstrap Diode
An external bootstrap diode may enhance the
efficiency of the regulator, the applicable
conditions of external BST diode are:
VOUT=5V or 3.3V; and
Duty cycle is high: D=
IN
OUT
V
>65%
In these cases, an external BST diode is
recommended from the output of the voltage
regulator to BST pin, as shown in Fig.5
MP2482
SW
BST
C
L
BST
COUT
5V or 3.3V
External BST Diode
IN4148
Figure 5—Add Optional External Bootstrap
Diode to Enhance Efficiency
The recommended external BST diode is
IN4148, and the BST cap is 0.1~1F.
By using this circuit, 5V input voltage can output
3.3V and 2.5V with just 30mA load.
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