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MP2372DN 데이터시트(PDF) 11 Page - Monolithic Power Systems

부품명 MP2372DN
상세설명  3A, 28V, 925KHz Step-Down Converter
PDF  13 Pages
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제조업체  MPS [Monolithic Power Systems]
홈페이지  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2372DN 데이터시트(HTML) 11 Page - Monolithic Power Systems

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MP2372 – 3A, 28V, 925KHZ STEP-DOWN CONVERTER
MP2372 Rev. 0.92
www.MonolithicPower.com
11
12/22/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
External Bootstrap Diode
Enough voltage of the bootstrap capacitor can
enhance the efficiency of the regulator and
increase the output capacity. The MP2372 can’t
output 3.3V/3A when the input voltage is only
about 5V. An External charge circuit shown in
Figure 4 can be a solution, and the applicable
conditions of the circuit are:
VIN is only about 5V, and VOUT is 3.3V or less
The Duty cycle is high: D= O
IN
V
V
>60%
The external bootstrap diode circuit can’t be
applied when VIN>6V
Figure 4—External Bootstrap Diode Circuit
D1 integrates two diodes in SOT-523 package
such as BAV199T which will not increase the
PCB size and the cost. The additional capacitor
C1 can be only 10nF.



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