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MP28248 Datasheet(PDF) 7 Page - Monolithic Power Systems

Part No. MP28248
Description  High-Efficiency, Fast-Transient, 3A, 4.2V-20V Input Synchronous Step-down Converter in a QFN12 (2x3mm) Package
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Maker  MPS [Monolithic Power Systems]
Homepage  http://www.monolithicpower.com
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MP28248 Datasheet(HTML) 7 Page - Monolithic Power Systems

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MP28248 – 3A, 4.2V-20V INPUT, FAST-TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER IN QFN12 (2X3mm)
MP28248 Rev 1.0
www.MonolithicPower.com
7
1/5/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 1.2V, L = 2µH, TA = 25°C, unless otherwise noted.
40
50
60
70
80
90
100
0.01
0.1
1
10
OUTPUT CURRENT(A)
Efficiency vs. Load Current
Vo=1.2V
Vin=20V
Vin=12V
Vin=5V
0
200
400
600
800
1000
1200
0
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT(A)
Power Loss vs. Load Current
Vo=1.2V
Vin=20V
Vin=12V
Vin=5V
70
75
80
85
90
95
100
0.01
0.1
1
10
OUTPUT CURRENT(A)
Vin=8V
Vin=20V
Vin=12V
Efficiency vs. Load Current
0
200
400
600
800
1000
1200
1400
1600
0
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT(A)
Vin=20V
Vin=12V
Vin=8V
Power Loss vs. Load Current
OUTPUT CURRENT(A)
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
4
8
12
16
20
INPUT VOLTAGE(V)
No Load
Half Load
Full Load
Line Regulation
Vo=1.2V
1.164
1.166
1.168
1.17
1.172
1.174
1.176
1.178
1.18
1.182
1.184
1.186
510
15
INPUT VOLTAGE(V)
Half Load
Full Load
No Load
Vo vs. Vin
Vo=1.2V
-1.5
-1
-0.5
0
0.5
1
1.5
0
0.5
1
1.5
2
2.5
3
Vin=20V
Vin=12V
Vin=5V
Load Regulation
Vo=1.2V
Case Temperature Rise vs.
Output Current
0
5
10
15
20
25
0
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT(A)
Vin=20V
Vin=12V
Vo=1.2V
Vo vs. Io
1.16
1.165
1.17
1.175
1.18
1.185
1.19
1.195
0
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT(A)
Vo=1.2V
Vin=20V
Vin=12V
Vin=5V


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