Figure 12-12. Uhf (403-440 Mhz) Dc Regulation Schematic Diagram (8486635Z03-O) - Motorola CP150 Service Manual

12-14
J301
POS
NEG
DATA
BATT_CHARGE
C302
390pF
TP302
1
VOLUME
ON_OFF

Figure 12-12. UHF (403-440 MHz) DC Regulation Schematic Diagram (8486635Z03-O)

June, 2005
VR301
F301
MMBZ5250B
3A D301
C301 NC
47pF
20V
VR302
MMBZ5250B
C305 C306
NC
100pF .01uF
20V
D3_3V
R506
S444
100
SWITCH
HIGH 4
3
2
R508
1 5
100K
SWB+
LOW
R507
100
6 7
Q494
R510 6
1
330K
2
3
4
DC Regulation
USWB+
U310
TK71750S
1 VIN 5
VOUT
3
4 CTRL
C303 C304 BYPASS
GND
.01uF
33uF
2
C310
.01uF
D3_3V
R313
10K
RX_ENA
TX_ENA
Q493
2 3
R509
1
100K
U320
LP2986
5
4
INPUT OUTPUT
8
SHUTDOW N
7
3
NC
SENSE ERROR
6
2
NC
TAP FEEDBACK
GND
1
U330
TK71730S
1
VIN VOUT 5
3
CTRL
4
BYPASS
GND
C331
2
.01uF
UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)
C311 C312 C313
.018uF .01uF
10uF
Q311
C314
R310
100K
1200pF
R312
Q313
20K
C315
1200pF
Q312
R311
100K
C316
1200pF
C323
150pF
R322
100K
D3_3V
C321 C322
C320
R320
.01uF
330K 10uF
.018uF
1%
R321
200K
1%
C333
C334
.01uF
10uF
5V
5R
5T
RESET
D3_3V
3V
68810309N62-C