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MIC28510 12V EV 其他数据使用手册 - Microchip（微芯）
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MIC28510 12V EV数据手册
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Micrel, Inc. MIC28510 4A Evaluation Board
March 2012
3
M9999-030712
hbwhelp@micrel.com
or (408) 955-1690
MIC28510 0.8V to 5V/4A Evaluation Board Typical Characteristics
Efficiency (V
IN
= 48V)
vs. Output Current
10
20
30
40
50
60
70
80
90
100
012345
OUTPUT CURRENT (A)
EFFICIENCY (%)
6
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
f
SW
= 250kHz
Thermal Derating
0
1
2
3
4
25 40 55 70 85 100
MAXIMUM AMBIENT TEMPERATURE
(°C)
LOAD CURRENT (A)
V
OUT
= 3.3V
fsw = 250kHz
L = 10µH
T
j_MAX
=125°C
V
IN
= 5V
V
IN
= 75V
V
IN
= 48V
Thermal Derating
0
1
2
3
4
25 40 55 70 85 100
MAXIMUM AMBIENT TEMPERATURE
(°C)
LOAD CURRENT (A)
V
OUT
= 5V
f
SW
= 250kHz
L = 10µH
T
j_MAX
= 125°C
V
IN
= 8V
V
IN
= 75V
V
IN
= 48V
Thermal Derating
Thermal Derating
0
1
2
3
4
25 40 55 70 85 100
MAXIMUM AMBIENT TEMPERATURE
(°C)
LOAD CURRENT (A)
V
OUT
= 3.3V
f
SW
= 250kHz
L = 10µH
T
j_MAX
= 125°C
V
IN
=18V
V
IN
= 12V
V
IN
= 24V
Thermal Derating
0
1
2
3
4
25 40 55 70 85 100
MAXIMUM AMBIENT TEMPERATURE
(°C)
LOAD CURRENT (A)
V
OUT
= 2.5V
f
SW
= 250kHz
L = 10µH
T
j_MAX
= 125°C
V
IN
=18V
V
IN
= 12V
V
IN
= 24V
0
L
1
2
3
4
25 40 55 70 85 100
MAXIMUM AMBIENT TEMPERATURE
(°C)
OAD CURRENT (A)
V
OUT
= 5V
f
SW
= 250kHz
L = 10µH
T
j_MAX
= 125°C
V
IN
=18V
V
IN
= 24V
V
IN
= 12V
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC28510 case mounted on a 5 square inch 4 layer, 0.62”,
FR-4 PCB with 2oz. finish copper weight per layer, see Thermal Measurement section. Actual results will depend upon the size of the PCB, ambient
temperature and proximity to other heat emitting components.
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