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WM8321 数据表(PDF) 247 Page - Wolfson Microelectronics plc

部件名 WM8321
功能描述  Processor Power Management Subsystem
PDF  253 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8321 数据表(HTML) 247 Page - Wolfson Microelectronics plc

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Production Data
WM8321
w
PD, February 2012, Rev 4.0
247
Wolfson recommends the following external components for use with DC-DC Converters 3 and 4.
Note that the switching frequency of DC-DC3 and DC-DC4 is fixed at 2MHz and the output inductor
must be 2.2
H in all cases.
The output capacitor must be consistent with the DCm_CAP register setting. For best performance,
the 47
F component is recommended. For typical applications, the 22F is suitable. The alternative
values may be used for size or cost reasons if preferred.
COMPONENT
VALUE
PART NUMBER
SIZE
L
2.2
H
Coilcraft LPS3015-222ML_
3 x 3 x 1.5mm
COUT
47
F
MuRata GRM21BR60G476MEA1
0805
22
F
MuRata GRM21BR60J226ME39
0805
10
F
MuRata GRM188R60J106ME84
0603
CIN
4.7
F
MuRata GRM188R60J475ME84
0603
Table 86 Recommended External Components - DC-DC3, DC-DC4



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