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MP2490CP Datasheet(PDF) 5 Page - Monolithic Power Systems

No. de pieza MP2490CP
Descripción Electrónicos  1.5A, 36V, 700KHz Step-Down Converter with Programmable Output Current Limit
PDF  13 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2490CP Datasheet(HTML) 5 Page - Monolithic Power Systems

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MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT
MP2490 Rev. 0.92
www.MonolithicPower.com
5
4/23/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
C1=C2=4.7μF, C3=C4=10μF, C8=0.1μF, L=12μH, TA=25ºC, unless otherwise noted
DUTY CYCLE (%)
Peak Current vs.
Duty Cycle
40
2.0
2.2
2.4
2.6
2.8
3.0
3.2
50
60
70
80
90
11.7
11.8
11.9
12.0
12.1
12.2
12.3
Load Regulation
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
Load Regulation
Load Regulation
0
400
3.20
3.24
3.28
3.32
3.36
3.40
4.90
4.94
4.98
5.02
5.06
5.10
800
1200 1600 2000
0
400
800
1200 1600 2000
0
400
800
1200 1600 2000
50
60
70
80
90
100
LOAD CURRENT (mA)
Efficiency vs.
Load Current
10
100
1000
10000
50
60
70
80
90
100
LOAD CURRENT (mA)
Efficiency vs.
Load Current
10
100
1000
10000
VOUT=5V
VIN=8V
VIN=12V
VIN=24V
50
60
70
80
90
100
LOAD CURRENT (mA)
Efficiency vs.
Load Current
10
100
1000
10000
VIN=8V
VIN=12V
VIN=24V
VOUT=3.3V
VIN=18V
VIN=24V
VIN=36V
VOUT=12V
VIN=5V
VIN=12V
VIN=24V
VIN=8V
VIN=12V
VIN=24V
VIN=24V
VIN=36V
VIN=15V
VOUT=3.3V
0
0.5
1.0
1.5
2.0
2.5
0.5
1.5
2.5
3.5
4.5
5.5
Current Regulation
VIN =12V, VOUT=5V
R: Sense to RS, L: Sense to DCR
R
L
Loop Gain Bode Plot
VIN =12V, VOUT=5V, IOUT=0.5A
LOAD CURRENT (A)
1
10
100
1000
FREQUENCY (kHz)
-60
-40
-20
0
20
40
60
-135
-90
-45
0
45
90
135
Phase
Gain



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