Sony CDX-GT878US - Page 33

CDX-GT828U/GT870US/GT878US
33
IC602 BD9781HFP (MAIN Board (3/4))
1
VIN
2
SW
3
RT
4
GND
6
INV
7
EN/SYNC
5
FB
DRIVER
CURRENT LIMIT
ERROR
AMP
SOFT
START
PWM
COMPARATOR
THERMAL
SHUT DOWN
LATCH
OSC SYNC
VREF
1
2
GND
OC
IN
CHARGE
PUMP
3IN
4EN
DRIVER
CURRENT
LIMIT
THERMAL
SENSE
UVLO
CS
8
7
5
6
OUT
OUT
OUT
IC603 TPS2051BDRG4 (MAIN Board (3/4))
8 7 56
VREF
OSC
0.52V
30A
L.O
PWM
ER.AMP
S.C.P
U.VLO
IN
F.B
GND
OUT
REF CT CS VCC
1 2 43
IC620 NJM2377M(TE2) (MAIN Board (3/4)) IC904 SN74LVC2G66DCUR (KEY Board)
3
11A
1B
2C
GND
VCC
1C
2B
2A
4
2
5
7
6
8