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MP2492DN Datasheet(PDF) 5 Page - Monolithic Power Systems

No. de pieza MP2492DN
Descripción Electrónicos  2A, 55V, 100kHz Step-Down Converter with Programmable Output Current Limit
PDF  11 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2492DN Datasheet(HTML) 5 Page - Monolithic Power Systems

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MP2492 – 2A, 55V, 100kHz WITH PROGRAMMABLE OUTPUT CURRENT LIMIT
MP2492 Rev. 1.0
www.MonolithicPower.com
5
12/20/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
C1=220uF, C2=2.2uF, C3=39uF, C4=22uF, L=39uH, TA=25ºC，unless otherwise noted.
2.0
2.8
3.6
4.4
5.2
6.0
0
20406080
100
DUTY CYCLE ( % )
IOUT (A)
IOUT (A)
IOUT (A)
Load Regulation
Load Regulation
Load Regulation
Maximum IOUT vs.
Duty Cycle
Loop Gain with Phase Margin
VIN=12V, VOUT=5V, IOUT=1.8A
4.980
4.984
4.988
4.992
4.996
5.000
5.004
0.0
0.4
0.8
1.2
1.6
2.0
VIN=8V
VIN=12V
VIN=50V
3.290
3.294
3.298
3.302
3.306
3.310
0.0
0.4
0.8
1.2
1.6
2.0
2.500
2.502
2.504
2.506
2.508
2.510
0.0
0.4
0.8
1.2
1.6
2.0
VIN=8V
VIN=50V
VIN=12V
VIN=12V
VIN=50V
20
30
40
50
60
70
80
90
100
0.0
0.4
0.8
1.2
1.6
2.0
IOUT (A)
VOUT =5V
VOUT =5V
Efficiency vs. Load Current
Efficiency vs. Load Current
Efficiency vs. Load Current
VIN=8V
VIN=12V
VIN=50V
20
30
40
50
60
70
80
90
100
0.0
0.4
0.8
1.2
1.6
2.0
VIN=8V
VIN=12V
VIN=50V
IOUT (A)
VOUT =3.3V
VOUT =3.3V
20
30
40
50
60
70
80
90
100
0.0
0.4
0.8
1.2
1.6
2.0
IOUT (A)
VOUT =2.5V
VOUT =2.5V
VIN=4.5V
VIN=12V
VIN=50V
-50
-40
-30
-20
-10
0
10
20
30
40
50
0.1
1
10
100
1000
FREQUENCY (kHz)
-200
-160
-120
-80
-40
0
40
80
120
160
200
Current regulation
Sense to DCR
0
1
2
3
4
5
6
0
0.5
1
1.5
2
2.5
LOAD CURRENT ( A )
Gain
Phase



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