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MP28254 Datasheet(PDF) 7 Page - Monolithic Power Systems

Part # MP28254
Description  High Efficiency 4A, 21V, 500kHz Synchronous Step down Converter
PDF  14 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP28254 Datasheet(HTML) 7 Page - Monolithic Power Systems

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MP28254 – SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP28254 Rev. 1.01
www.MonolithicPower.com
7
5/15/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, VOUT = 1.2V, L = 1.8µH, TA = +25ºC, unless otherwise noted.
Enable Startup
with 4A Load
Enable Startup
without Load
Power up with 4A Load
VOUT
1V/div
VSW
10V/div
IINDUCTOR
5A/div
VOUT
1V/div
VEN
5V/div
VSW
10V/div
IINDUCTOR
5A/div
VOUT
1V/div
VEN
5V/div
VSW
10V/div
IINDUCTOR
2A/div
2ms/div
4ms/div
4ms/div
Short Entry
2ms/div
Load Transient Response
IOUT=2A-4A
Output Ripple Voltage
IOUT=4A
Input Ripple Voltage
IOUT=4A
Short Recovery
VOUT
1V/div
VIN
10V/div
VSW
10V/div
IINDUCTOR
5A/div
VOUT
1V/div
VSW
10V/div
IINDUCTOR
5A/div
10ms/div
Power up without Load
VOUT
1V/div
VIN
10V/div
VSW
10V/div
IINDUCTOR
2A/div
10ms/div
VSW
5V/div
VIN/AC
100mV/div
VSW
5V/div
VOUT/AC
50mV/div
VOUT/AC
20mV/div
ILOAD
2A/div
IINDUCTOR
5A/div



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