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WM8321 데이터시트(PDF) 249 Page - Wolfson Microelectronics plc

부품명 WM8321
상세설명  Processor Power Management Subsystem
PDF  253 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8321 데이터시트(HTML) 249 Page - Wolfson Microelectronics plc

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Production Data
WM8321
w
PD, February 2012, Rev 4.0
249
30.4 LDO REGULATOR EXTERNAL COMPONENTS
The recommended connections to the LDO Regulators are illustrated in Figure 31.
Figure 31 LDO Regulators External Components
When selecting suitable capacitors, is it imperative that the effective capacitance is within the
required limits at the applicable input/output voltage of the converter. Ceramic X7R or X5R types are
recommended.
Wolfson recommends the following external components for use with LDO Regulators 1 to 6.
COMPONENT
VALUE
PART NUMBER
SIZE
COUT
2.2μF
Kemet C0402C225M9PAC
0402
CIN
1.0μF
MuRata GRM155R61A105KE15
0402
Table 88 Recommended External Components - LDO1 to LDO6
Wolfson recommends the following external components for use with LDO Regulators 7 to 10. For
these regulators, note that it is important that the output capacitance, COUT, does not exceed 4.7F.
COMPONENT
VALUE
PART NUMBER
SIZE
COUT
1.0μF
MuRata GRM155R61A105KE15
0402
CIN
1.0μF
MuRata GRM155R61A105KE15
0402
Table 89 Recommended External Components - LDO7 to LDO10
Wolfson recommends the following external components for use with LDO Regulators 11 to 13.
COMPONENT
VALUE
PART NUMBER
SIZE
COUT (LDO11)
0.1μF
MuRata GRM033R60J104KE19
0201
COUT (LDO12)
0.1μF
MuRata GRM033R60J104KE19
0201
COUT (LDO13)
2.2μF
Kemet C0402C225M9PAC
0402
Table 90 Recommended External Components - LDO11 to LDO13



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