Motorola CP150TM User Manual
Page 212
12-30
UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)
June, 2005
6880309N62-C
5 V
7.5 V (ON)
0 V (OFF)
3.3 V (ON)
0 V (OFF)
0 V (ON)
7.5 V (OFF)
7.5 V (ON)
0 V (OFF)
3.3 V
3.3 V
3.0 V
0 V (RX)
5 V (TX)
5 V (RX)
0 V (TX)
NC
7.5 V
D3_3V
3V
RESET
VOLUME
ON_OFF
TX_ENA
5T
USWB+
RX_ENA
5V
C302
C311
C334
10uF
D3_3V
J301
DATA
NEG
POS
C322
.01uF
NC
20V
MMBZ5250B
VR302
100K
VR301
MMBZ5250B
20V
R311
D3_3V
Q313
7
ERROR
2
FEEDBACK
1
GND
4
INPUT
5
OUTPUT
6
SENSE
8
SHUTDOWN
3
TAP
U320
LP2986
Q312
D3_3V
C331
.01uF
330K
R510
200K
1%
R321
1200pF
C315
R313
20K
7
TAB2
2
R312
20K
SWITCH
S444
4
LOW
1
5
HIGH
3
6
TAB1
R508
100K
C303
10uF
C320
.018uF
C301
390pF
.01uF
C306
Q311
C310
.01uF
4
BYPASS
3
CTRL
2
GND
VIN
1
5
VOUT
.018uF
TK71730S
U330
NC
390pF
1200pF
C316
3
CTRL
2
GND
VIN
1
5
VOUT
1200pF
C314
TK71750S
U310
4
BYPASS
4
1
3
100K
R310
3
1
2
Q494
2
6
Q493
NC
R322
100K
100K
R509
R507
100
100pF
C305
D301
.01uF
C313
C323
150pF
.01uF
C304
R506
100
C312
10uF
R320
1%
330K
10uF
C321
3A
F301
SWB+
BATT_CHARGE
.01uF
C333
5R
0 V (RX)
5 V (TX)
3.3 V (RX)
0 V (TX)
0 V (RX)
3.3 V (TX)
5 V (RX)
0 V (TX)
Figure 12-24. UHF (438-470 MHz) DC Regulation Schematic Diagram (8486348Z09-A)