MD3221N 查看數據表（PDF） - Shindengen
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MD3221N Datasheet PDF : 26 Pages
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11 Characteristics
◆Output voltage : 3.3V
Conditions
LC：OFF, f ＝300kHz, L ＝12μH
● Efficiency and Loss Characteristics (f＝300kHz)
100
2
90
1.8
80
1.6
70
1.4
60
Vi=5V
Vi=8V
1.2
Vi=12V
50
Vi=20V
1
40
0.8
30
0.6
20
0.4
10
0.2
0
0
0
0.5
1
1.5
2
2.5
3
Output current Io [A]
Ta ＝25℃ unless specified otherwise.
● Temperature Characteristics at Vi ＝5V, IO＝3A
3.4
3.36
3.32
3.28
3.24
3.2
-30
-10
10
30
50
70
90
Ambient temperature Ta [˚C ]
● Line Regulation at IO＝3A
3.4
3.36
● Start-up Characteristics at Vi ＝5V, IO＝3A
CH1 : Input voltage
3.32
3.28
3.24
3.2
0
5
10
15
20
Input voltage Vi [V]
CH2 : S/S pin voltage
CH3 : Output voltage
X axis : 10ms/div.
Y axis : CH1 : 5V/div.、CH2 : 2V/div.、CH3 : 2V/div.
● Load Regulation at Vi ＝5V
3.4
3.36
● R / C Start-up Characteristics at Vi ＝5V, IO＝3A
CH1 : R/C pin voltage
3.32
3.28
3.24
3.2
0
0.5
1
1.5
2
2.5
3
Output current Io [A]
CH2 : S/S pin voltage
CH3 : Output voltage
X axis : 10ms/div.
Y axis : CH1 : 5V/div.、CH2 : 2V/div.、CH3 : 2V/div.
21
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