参数资料
型号: AS1340 EB
厂商: ams
文件页数: 12/17页
文件大小: 0K
描述: EVAL BOARD FOR AS1340 DC-DC
设计资源: Design Support Tool
标准包装: 1
系列: *
其它名称: Q6687728
AS1340
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
9.6 Inductor Selection
For the external inductor, a 6.8μH inductor is recommended. Minimum inductor size is dependant on the desired efficiency and output current.
Inductors with low core losses and small DCR at 1MHz are recommended.
Table 4. Recommended Inductors
Part Number
LPS4018-472ML_
ME3220-472ML_
MOS6020-472ML_
MSS6122-472ML_
LPS4018-682ML_
ME3220-682ML_
MOS6020-682ML_
MSS6122-682ML_
L
4.7μH
4.7μH
4.7μH
4.7μH
6.8μH
6.8μH
6.8μH
6.8μH
DCR
0.125 ?
0.190 ?
0.050 ?
0.065 ?
0.150 ?
0.270 ?
0.078 ?
0.100 ?
Current Rating
1.9A
1.5A
1.94A
1.82A
1.3A
1.2A
1.72A
1.50A
Dimensions (L/W/T)
4.4x4.4x1.7mm
3.2x2.8x2mm
6.8x6x2.4mm
6.1x6.1x6mm
4.4x4.4x1.7mm
3.2x2.8x2mm
6.8x6x2.4mm
6.1x6.1x6mm
Coilcraft
www.coilcraft.com
Figure 30. Efficiency Comparison of Different Inductors, V IN = 3.3V, V OUT = 18V
100
90
80
70
60
50
40
30
100
90
80
70
60
50
40
30
20
10
0
LPS4018-472
LPS4018-682
ME3220-472
ME3220-682
20
10
0
MOS6020-472
MOS6020-682
MSS6122-472
MSS6122-682
1
10
100
1
10
100
Output Current (mA)
Figure 31. Efficiency Comparison of Different Inductors, V IN = 5.5V, V OUT = 18V
Output Current (mA)
100
90
80
70
60
50
40
30
100
90
80
70
60
50
40
30
20
10
0
LPS4018-472
LPS4018-682
ME3220-472
ME3220-682
20
10
0
MOS6020-472
MOS6020-682
MSS6122-472
MSS6122-472
1
10
100
1
10
100
Output Current (mA)
Output Current (mA)
www.ams.com/DC-DC_Step-Up/AS1340
Revision 1.20
12 - 17
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