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MP28265 Datasheet(PDF) 5 Page - Monolithic Power Systems

Part # MP28265
Description  21V, 5A, 1.1MHz 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

MP28265 Datasheet(HTML) 5 Page - Monolithic Power Systems

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MP28265 – 5A, 21V, SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP28265 Rev. 0.92
www.MonolithicPower.com
5
12/2/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 1.2V, L = 0.95µH, TA = +25ºC, unless otherwise noted.
Load Regulation
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Enable Supply Current
vs. Input Voltage
VFB=1V
Disable Supply Current
vs. Input Voltage
VEN=0V
500
550
600
650
700
750
800
850
900
950
1000
0
5
10
15
20
25
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0
5
10
15
20
25
VCC Regulator Line Regulation
3.5
4
4.5
5
5.5
6
0
5
10
15
20
25
Peak Current vs. Duty Cycle
5
5.2
5.4
5.6
5.8
6
6.2
6.4
6.6
6.8
7
0 102030405060708090 100
DUTY CYCLE (%)
Operating Range
0.1
1
10
100
0
5
10
15
20
25
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
012345
LOAD CURRENT(A)
VIN=4.5V
VIN=21V
VIN=12V
Line Regulation
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0
5
10
15
20
25
IOUT=0A
IOUT=2.5A
IOUT=5A
Case Temperature Rise
vs.Output Current
0
10
20
30
40
50
60
012345
OUTPUT CURRENT (A)
Dmax Limit
Minimum on Time Limit



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