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MP28258 датащи(PDF) 5 Page - Monolithic Power Systems

номер детали MP28258
подробное описание детали  High Efficiency, Fast Transient, 3A, 4.2V-20V Input Synchronous Step-down Converter in QFN12
PDF  18 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP28258 датащи(HTML) 5 Page - Monolithic Power Systems

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MP28258 – 3A, 4.2V-20V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER IN QFN12 (2X3mm)
MP28258 Rev 1.14
www.MonolithicPower.com
5
9/25/2012
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.
Efficiency
VOUT=5V, fs
Efficiency
VOUT=1.2V, fs
Line Regulation
Thermal Test
VOUT=1.2V
Load Regulation
Frequency vs. Temperature
55
60
65
70
75
80
85
90
95
0.01
0.1
1
10
IOUT (A)
IOUT (A)
IOUT (A)
IOUT (A)
IOUT (A)
60
65
70
75
80
85
90
95
100
0.01
0.1
1
10
VIN (V)
-1.00
-0.80
-0.60
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
0
0.5
1
1.5
2
2.5
3
0
5
10
15
20
25
30
0
0.5
1
1.5
2
2.5
3
Thermal Test
VIN=12V, VOUT=5V, TA
0
5
10
15
20
25
30
35
40
45
50
55
012345
400
405
410
415
420
425
430
435
440
445
450
-40 -20
0 20 40 60 80 100 120140
TEM
VIN=12V
VIN=5V
VIN=16V
VIN=8V
VIN=12V
VIN=12V
VIN=21V
VIN=12V
No air flow
No air flow
Frequency vs. Input Voltage
IOUT=1A
500
600
700
800
900
0
5
10
15
20
VIN (V)
VOUT=1.8V
VOUT=3.3V
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
5
7
9 111315 171921
I OUT=3A
VOUT VS. IOUT
VOUT=1.2V, Freq=500kHz
IOUT(A)
1.1
1.12
1.14
1.16
1.18
1.2
1.22
1.24
0.01
0.1
1
10
VIN=16V
VIN=12V
VIN=5V
VIN=8V



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