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MP2482 Fiches technique(PDF) 12 Page - Monolithic Power Systems

No de pièce MP2482
Description  5A, 30V, 420kHz Step-Down Converter
PDF  14 Pages
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Fabricant  MPS [Monolithic Power Systems]
Site Internet  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2482 Fiches technique(HTML) 12 Page - Monolithic Power Systems

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MP2482 – 5A, 30V, 420kHZ STEP-DOWN CONVERTER
MP2482 Rev.1.4
www.MonolithicPower.com
12
9/21/2011
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2011 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
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 0.1~1µF.
By using this circuit, 5V input voltage can output
3.3V and 2.5V with just 30mA load.



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