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MP28256EL Datasheet(PDF) 6 Page - Monolithic Power Systems

Part # MP28256EL
Description  21V, 3A 500kHz Synchronous Step-Down Coverter
Download  13 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP28256EL Datasheet(HTML) 6 Page - Monolithic Power Systems

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MP28256 – 21V, 3A, 500kHz SYNCHRONOUS STEP-DOWN CONVERTER
MP28256 Rev. 1.0
www.MonolithicPower.com
6
11/3/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Performance curves are tested on the evaluation board of the Design Example section.
VIN = 12V, VOUT = 1.2V, L = 2.8µH, TA = +25ºC, unless otherwise noted.
Enable Startup
with 3A Load
Enable Startup
without Load
Power Up without Load
Power Up with 3A Load
VOUT
1V/div
VSW
5V/div
IINDUCTOR
5A/div
VOUT
1V/div
VEN
5V/div
VSW
10V/div
IINDUCTOR
2A/div
IINDUCTOR
5A/div
VOUT
1V/div
VEN
5V/div
VSW
10V/div
IINDUCTOR
2A/div
VOUT
1V/div
VIN
10V/div
VSW
5V/div
IINDUCTOR
5A/div
1ms/div
2ms/div
1ms/div
1ms/div
1ms/div
Short Entry
Short Recovery
Output Ripple Voltage
IOUT=3A
Input Ripple Voltage
IOUT=3A
VOUT
1V/div
VIN
10V/div
VSW
5V/div
IINDUCTOR
5A/div
VOUT
1V/div
VSW
5V/div
IINDUCTOR
5A/div
1ms/div
VSW
5V/div
VSW
5V/div
VOUT/AC
10mV/div
VIN/AC
100mV/div
Load Transient Response
IOUT=1.5A-3A
VOUT/AC
100mV/div
IOUT
1A/div


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