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WM8352 数据表(PDF) 28 Page - Wolfson Microelectronics plc

部件名 WM8352
功能描述  Wolfson AudioPlus™ Stereo CODEC with Power Management
PDF  336 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8352 数据表(HTML) 28 Page - Wolfson Microelectronics plc

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WM8352
Production Data
w
PD, February 2011, Rev 4.4
28
9.2
DC-DC CONVERTERS
9.2.1
POWER EFFICIENCY
EFFICIENCY vs LOAD
DCDC1
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
LOAD (A)
VOUT = 1.8V
VIN = 3.0V
VIN = 3.7V
VIN = 4.2V
STANDBY
ACTIVE
VIN = 3.0V
VIN = 3.7V
VIN = 4.2V
EFFICIENCY vs LOAD
DCDC1
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
LOAD (A)
VOUT = 1.2V
VIN = 3.0V
VIN = 3.7V
VIN = 4.2V
STANDBY
ACTIVE
VIN = 3.0V
VIN = 3.7V
VIN = 4.2V
Figure 1 DC-DC1 Efficiency Vs Load Current Vo=1.8V
Figure 2 DC-DC1 Efficiency Vs Load Current Vo=1.2V
EFFICIENCY vs LOAD
DCDC3
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
LOAD (A)
VOUT = 1.8V
VIN = 3.0V
VIN = 3.7V
VIN = 4.2V
STANDBY
ACTIVE
VIN = 3.0V
VIN = 3.7V
VIN = 4.2V
EFFICIENCY vs LOAD
DCDC2
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
LOAD (A)
VOUT = 20.0V
VIN = 3.1V
VIN = 3.7V
VIN = 4.2V
Figure 3 DC-DC3 Efficiency Vs Load Current Vo=1.8V
Figure 4 DC-DC2 Efficiency Vs Load Current Vo=20V



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