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MIC2145BMM датащи(PDF) 9 Page - Micrel Semiconductor

номер детали MIC2145BMM
подробное описание детали  High Efficiency 2.5W Boost Converter
PDF  15 Pages
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производитель  MICREL [Micrel Semiconductor]
домашняя страница  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2145BMM датащи(HTML) 9 Page - Micrel Semiconductor

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April 2005
9
M9999-042205
MIC2145
Micrel, Inc.
Bootstrap
A bootstrapped configuration is recommended for applica-
tions that require high efficiency at heavy loads (>70mA).
This is achieved by connecting the V
DD pin to VOUT (see
L1
10µH
Sumida
CR43-100
MIC2145
D1
On Semiconductor
MBR0530T1
RSET
EN
VDD
SW
R4
1M
R3
274k
C3
100pF
VOUT
5V/250mA
PGND
FB
SGND
R1
100k
VIN
3.6V
SS
C2
0.01µF
C1
10µF/6.3V
Murata
GRM42-6 X5R 106K 6.3
R2
10k
C4
10µF/6.3V
Murata
GRM42-6 X5R 106K 6.3
Figure 6. Basic Configuration
L1
10µH
Sumida
CR43-100
MIC2145
D1
On Semiconductor
MBR0530T1
RSET
SGND
PGND
SW
R4
1M
R1
100k
C3
100pF
VOUT
5V/350mA
VDD
EN
FB
VIN
3.6V
SS
C2
0.01µF
C1
10µF/6.3V
Murata
GRM42-6 X5R 106K 6.3
R2
10k
R3
274k
C4
10µF/6.3V
Murata
GRM42-6 X5R 106K 6.3
Figure 7. Bootstrap Configuration
Figure 7). For applications that require high efficiency at light
loads (<70mA), the V
DD pin is connected to the input voltage
(V
IN); this is referred to as the basic configuration (see Figure
6).



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