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STW41411 bảng dữ liệu(PDF) 23 Page - STMicroelectronics

tên linh kiện STW41411
Giải thích chi tiết về linh kiện  Single-coil dual-output step-down DC/DC converter for digital base band and multimedia processor supply
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STW41411 bảng dữ liệu(HTML) 23 Page - STMicroelectronics

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Application information
STw4141
22/30
4.6.2
Input capacitor (CIN selection)
Input capacitor of 10
µF ceramic low ESR capacitor should be used to reduce switching
losses. It should be placed as close as possible to supply pins VDD and PVDD. The
connection traces should be wide and short to minimize impedance.
4.6.3
Output capacitors (COUT selection)
The selection of COUT is driven by the required ESR to minimize voltage ripple and load
step transients. There are two possibilities for output capacitors: either a 22
µF is connected
to ground or two 10
µF ceramic are used to reduce ESR and switching losses. The capacitor
should be placed as close as possible to VOUTx pins. The connection traces should be wide
and short to minimize impedance.
4.6.4
Capacitors selection
Table 9.
Bill of Material: capacitor selection
Component
Supplier
Part number
Value
Case size
C
IN
MURATA
GRM188R60J106ME47D
10
µF, 6.3V
0603
GRM21BR60J106ME15L
10
µF, 6.3V
0805
TAIYO YUDEN
JMK212BJ106MG-T
10
µF, 6.3V
0805
TDK
C1608X5R0J106MT
10
µF, 6.3V
0603
C2012X5R0J106MT
10
µF, 6.3V
0805
COUT1, COUT2
MURATA
GRM188R60J106ME47D
2 x 10
µF, 6.3V
2 x 0603
GRM21BR60J106ME15L
2 x 10
µF, 6.3V
2 x 0805
GRM21BR60J226ME15L
22
µF, 6.3V
0805
TAYIO YUDEN
JMK212BJ106MG-T
2 x 10
µF, 6.3V
2 x 0805
JMK212BJ226MG-T
22
µF, 6.3V
0805
TDK
C1608X5R0J106MT
2 x 10
µF, 6.3V
2 x 0603
C2012X5R0J106MT
2 x 10
µF, 6.3V
2 x 0805
C2012X5R0J226MT
22
µF, 6.3V
0805



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