wm8350 Wolfson Microelectronics plc, wm8350 Datasheet - Page 29

• Manufacturer Part Number: wm8350
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

Production Data
Figure 5 DC-DC2 Efficiency Vs Load Current Vo=5V
Figure 6 DC-DC1 Output Voltage Vs Output Current
w
1 .8 0 0
1 .7 9 5
1 .7 9 0
1 .7 8 5
1 .7 8 0
100
90
80
70
60
50
40
0 .0
0.001
0 .1
V
O U T P U T V O L T AG E
IN
0.01
L O AD C U R R E N T
= 3.1V
EFFICIENCY vs LOAD
0 .2
I
O
9.2.2
V
v s
DCDC2
LOAD (A)
IN
(A)
= 3.7V
0 .3
V
IN
= 4.2V
0.1
OUTPUT VOLTAGE REGULATION
0 .4
Vo = 1.8V
Vi = 3.7V
ACTIVE
V
OUT
= 5.0V
0 .5
1
Figure 7 DC-DC1 Output Voltage Vs Input Voltage
1.835
1.830
1.825
1.820
1.815
1.810
2.7
3.2
O UT PUT VO LT AG E
3.7
IN PUT VO LT AG E
V
vs
I
(V)
4.2
4.7
PD, June 2009, Rev 4.1
Vo= 1.8V
Io = 0.5A
5.2
WM8350
29