參數(shù)資料
型號(hào)： AS1343A-BTDT-10
廠商： AUSTRIAMICROSYSTEMS AG
元件分類： DC/DC變換器
英文描述： 42V, 1MHz, Single Cell, Boost; Package Type: TDFN(3x3)-10; Temperature Range: -40 - +85 °C; Dimension: 3 x 3 mm; Shutdown: Yes; Output Current: 140mA; Output Range: 5.5 to 42V; Supply Voltage: 0,90-3,60
封裝： TDFN(3x3)-10
文件頁(yè)數(shù)： 12/17頁(yè)
文件大?。?/td> 1074K
代理商： AS1343A-BTDT-10
www.austriamicrosystems.com
Revision 1.04
12 - 17
AS1343
Datasheet - Application Information
Inductor Selection
For the external inductor, a 4.7μH or 6.8μH inductor will usually suffice. Minimum inductor size is dependant on the
desired efficiency and output current. Inductors with low core losses and small DCR at 1MHz are recommended. It’s
also recommendet to choose an inductor which can handle at least 1.2A without saturating. The MOS6020 is a very
good choice because the DCR is quite small and the saturation current exeeds 1.2A. For space limiting applications
and input currents below 650mA the EPL2014 can be selected. Efficiency losses due to higher DCR should be consid-
ered. (see
Figure 30
and
Figure 31
)
Note:
For the Efficiency measurements in
Figure 30
and
Figure 31
a MBR0540 diode was used for D
1
.
Table 4. Recommended Inductors
Part Number
EPL2014-472MLC
LPS3015-472MLC
LPS4018-682MLC
LPS5030-682ML_
MOS6020-682MLC
MOS6020-472MLC
L
DCR
0.231
Ω
0.200
Ω
0.150
Ω
0.099
Ω
0.078
Ω
0.050
Ω
I
SAT
@ 20% drop Dimensions (L/W/T)
0.65A
1.2A
1.3A
1.7A
1.56A
1.82A
Manufacturer
Coilcraft
4.7μH
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