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MP8718 Scheda tecnica(PDF) 5 Page - Monolithic Power Systems

Il numero della parte MP8718
Spiegazioni elettronici  High Efficiency 4A, 21V, 500kHz Synchronous Step-down Converter
PDF  17 Pages
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Produttore elettronici  MPS [Monolithic Power Systems]
Homepage  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8718 Scheda tecnica(HTML) 5 Page - Monolithic Power Systems

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MP8718 – SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP8718 Rev. 0.9
www.MonolithicPower.com
5
2/9/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 1.2V, L=1.8µH, TA = +25ºC, unless otherwise noted.
Load Regulation
INPUT VOLTAGE (V)
Enabled Supply Current vs
Input Voltage
Peak Current vs
Duty Cycle
Operating Range
Vcc Regulator Line Regulation
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
700
705
710
715
720
725
730
735
740
745
750
DUTY CYCLE (%)
Line Regulation
OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
Case Temperature Rise vs.
Output Current
INPUT CURRENT (V)
OUTPUT CURRENT (A)
0
5
10
15
20
25
VFB=1V
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0
5
10
15
20
25
Disabled Supply Current vs
Input Voltage
3.5
4
4.5
5
5.5
0
5
10
15
20
25
5
5.2
5.4
5.6
5.8
6
6.2
6.4
6.6
6.8
7
0 10 20304050 607080 90100
0.1
1
10
100
0
5
10
15
20
25
Dmax Limit
Minimum on time Limit
0
5
10
15
20
25
01
2
3
4
5
VEN=0V
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0 0.5
1 1.5
2 2.5
3 3.5
4
VIN=4.5V
VIN=12V
VIN=21V
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0
5
10
15
20
25
IO=0A
IO=2A
IO=4A



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