Cinterion DSB75 - Figure 35: Schematic for Audio Supply (5 V0_I); Figure 36: Schematic for GSM Module Supply (3 V3_4 V5 or BATT+)

DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
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DSB75_hd_v12 Page 61 of 96 2008-08-26
AUDIO
GND
100R
R750
R751
100R
GNDGND
5V0_I
C752
100µF
C753
100µF
GND
C751 100N C750 100N
5V0
Figure 35: Schematic for audio supply (5V0_I)
3V3_4V5
GND
GND
1K
R415
2K7
R410
GND
12
10K
R409
X410
12
VIN
4
VOUT
N410
LP3856-ADJ
ADJ
5
3
GND
1
SD
2
X411
12
C411
1N
1K
R411
R414
1K
9410µF
C412,414,415
5V0
X405
GND
Figure 36: Schematic for GSM module supply (3V3_4V5 or BATT+)