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UNREG+
D301
L216
1SS400TE-61
---
NM
UNREG+
1
R301
0
Q302
C301
2SA1774TL-QR
47uF
NM
35V
C307
22pF
R308
100k
R311
C302
68k
0.1uF
R304
R312
22k
680
R313
C309
0.01uF
R305
15k
R314
C303
33pF
C305
0.001uF
R302
R303
100
68k
2
NM
C304
C306
NM
33pF
0.001uF
R306
1k
Q301
2SA1774TL-QR
R307
22k
NM
R309
150k
C308
150pF
R310
6.8k
UNREG-
3
4
5
A
B
Q304
SI4450DY-T1
NM
L301
8 7 6 5
Q303
10uH
C312
FB301
1uF
2SA1774TL-QR
4
R315
NM
10
C318
C320
1uF
47uF
1 2
3
35V
UNREG+
8 7 6 5
FB302
4
C310
0.001uF
R317
470k
1 2
3
1
28
RUN/SS1
FLTCPL
2
27
SENSE1+
TG1
C316
3
26
SI4450DY-T1
0.1uF
SENSE1-
SW1
4
25
VOSENSE1
BOOST1
100k
NM
5
24
R316
FREQSET
VIN
100k
6
23
D302
STBYMD
BG1
1SS400TE-61
7
22
FCB
EXTVCC
D303
100k
8
21
ITH1
INTVCC
1SS400TE-61
9
20
SGND
PGND
10
19
C317
3.3VOUT
BG2
11
18
0.1uF
8 7 6 5
ITH2
BOOST2
12
17
VOSENSE2
SW2
13
16
FB303
4
SENSE2-
TG2
SI4450DY-T1
14
15
SENSE2+
RUN/SS2
C321
C319
47uF
1 2
3
1uF
35V
IC301
C315
LTC1628CG#TR
2.2uF
8 7 6 5
FB306
4
C313
C311
0.1uF
1 2
3
0.001uF
C314
4.7uF
Q307
SI4450DY-T1
C
VR-277 (2/2)
VR-277 (2/2)
SUFFIX: -22
SUFFIX: -22
+3.3V
TP8
+3.3V
IC302
LT1963ES8#TR
R239
L319
1k
10uH
8
L303
L304
R319
IN
OUT
10uH
10uH
0.022
5
C327
SHDN
ADJ
C329
4.7uF
4
220uF
NM
NC
D305
4V
F1J6TP
C324
C322
330uF
4.7uF
6.3V
Q305
BL
TP7
R241
1k
Q306
L305
L302
R318
10uH
47uH
0.022
BL_UNREG
C326
270uF
D304
10V
F1J6TP
C328
4.7uF
NM
C325
C323
270uF
4.7uF
10V
L318
10uH
L312
10uH
C358
1uF
NM
R341
220
8
DRV
VIN
R342
0
1
S/S
C359
C360
4.7uF
4.7uF
3
VC
GND
R340
22k
NM
C362
100pF
IC303
C361
0.022uF
LT1619EMS8-E2
NM
6-12 (b)
6-12 (b)
D
E
+2.5V
TP5
+2.5V
R240
1k
L211
10uH
1
R320
2.2k
2
R321
C331
47
C330
56uF
C228
0.1uF
10V
100uF
10V
R322
100
R323
2.2k
GND
L317
10uH
TP1
+5V
+5V
IC305
LT1963ES8#TR
R235
1k
8
1
IN
OUT
R324
2.2k
5
2
SHDN
ADJ
4
R325
NC
C333
4.7k
C332
56uF
0.1uF
10V
R326
100
R327
2.2k
GND
D310
L313
C364
DA221-TL
C363
10uH
C367
C369
22uF
D311
4.7uF
47uF
47uF
25V
FB341
F1J6TP
35V
35V
Q316
7
8
7
6
5
SI9945AEY-T1
R347
FB335
220k
6
2
4
GATE
C365
FB336
C372
1
3
1uF
5
47uF
SENSE
35V
R348
FB337
R344
FB339
0
2
6.8k
FB
C370
4
R345
R346
47uF
0.022
0.022
35V
R343
22k
C366
C368
FB338
FB340
47uF
47uF
35V
35V
F
-5V
L315
L316
C376
10uH
10uH
1uF
TP3
IC304
LT1931ES5#TR
D313
R237
R351
RB060L-40TE25
1k
-5V
L215
5
1
15k
10uH
VIN
SW
R349
C255
4
3
C377
47k
SHDN
NFB
100uF
220pF
GND
10V
2
R350
GND
22k
C378
22uF
GND
TP6
IC204
+5V_A
LT1963ES8#TR
+5V-A
R242
1k
8
1
IN
OUT
R217
2.2k
5
2
SHDN
ADJ
4
R218
NC
C232
4.7k
C231
0.1uF
56uF
10V
R219
100
R220
2.2k
GND
LCD
TP4
IC206
LT1963ES8#TR
+12V
L314
R238
10uH
1k
8
1
IN
OUT
R222
15k
5
2
SHDN
ADJ
4
R223
NC
C235
C238
4.7k
C375
0.1uF
47uF
16V
1uF
R224
C373
10
C250
0.1uF
47uF
16V
R225
2.2k
GND
VR-277 (2/2)
BOARD NO. 1-685-848-22
RM-B750_VR-277_022_2
RM-B750
G
H
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