Sony MZ-N520 Service Manual page 48

MZ-N520/N520CK
VC VG DC IN
VB 43
CHARGE
MONITOR
X2/X4
BATM 44
DC IN
CHARGE
CHGSW 45
CONTROL
DC IN
RS 46
BATTERY
INP2 47
CHARGER
INM2 48
REGULATOR
RF2 49
DCIN 50 DC IN
CHGMON 51
DC IN
SVREF 52
BANDGAP
GND 53
GAIN 54
CHG 55
DREG 56
48
IC601 SC111292EPR2
42 41 40 39 38 37 36
VG
OUTPUT SW
VG
HI-BRIDGE
PRE DRIVER
VC
CONTROL
&
DC IN
DC IN
DETECT
1 2 3 4 5 6 7
IC651 XC6367A331MR
VOUT 1
VDD
2
+
–
ERROR
AMP
VREF WITH
CE 3 SOFT START,
CE
35 34 33 32 31
VG3
VG2 VG3
OUTPUT SW
CHARGE
PUMP 2
VG3
EFM
PRE DRIVER
CONTROL
VG2 VC
PWM
VC
VG
SYSTEM
SET-UP DOWN
PRE DRIVER
VIO
LEVEL
SHIFT
OUTPUT SW
VIO VC
8 9 10 11 12
PHASE
COMPENSATION
PWM
COMPARATOR
+
BUFFER,
DRIVER
–
RAMP WAVE
PWM/PFM
GENERATOR,
CONTROLLER
OSC
30 29
VG2
VC2 VG
28 C1H
CHARGE
PUMP 1
27 C1L
VC2
VC
26 VC2
VREF
25 VREF
BUFFER
24 CVREF
23 GND
22 DW BT
21 DW TP
20 RF1
VC
19 INM1
VC AMP
18 INP1
17 DTC
16 VREC
SW
15 VRECO2
13 14
5 EXT
4 GND