46
MZ-N420D
VG
VG3
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
54
55
56
1
53
2 3 4 5 6 7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
24
23
25
26
27
28
VB
BATM
CHGSW
RS
INP2
INM2
RF2
DCIN
CHGMON
SVREF
GAIN
CHG
DREG
GND
SW
RECON
OE
CLK
RI
FI
EFM
VIO
VC
VRECO1
L1_1
PGND1
PGND2
L1_2
VRECO2
VREC
DTC
INP1
INM1
RF1
DW TP
DW BT
CVREF
GND
VREF
VC2
C1L
C1H
VG2
C2L
C2H
VG3
HA
PGND3
HB
VG
VRECIN2
OUTB
PGND2
PGND2
OUTA
VRECIN1
OUTPUT SW
CONTROL
OUTPUT SW
CONTROL
PWM
SYSTEM
OUTPUT SW
CHARGE
CONTROL
DC IN
DETECT
DC IN
BANDGAP
HI-BRIDGE
PRE DRIVER
EFM
PRE DRIVER
CHARGE
PUMP 2
CHARGE
PUMP 1
VREF
BUFFER
SET-UP DOWN
PRE DRIVER
LEVEL
SHIFT
VC AMP
CHARGE
MONITOR
X2/X4
BATTERY
CHARGER
&
REGULATOR
VC VG DC IN
DC IN
DC IN
DC IN
DC IN
VIO
VIO
VC
VC
VC
VC
VC2
VC2 VG
VC
VG
VG2
SW
VG2
VG3
VG3
VG2
VG
VC
IC601 SC111292EPR2
IC651 XC6367A331MR
+
–
1
2
3
+
–
VREF WITH
SOFT START,
CE
RAMP WAVE
GENERATOR,
OSC
PWM/PFM
CONTROLLER
PHASE
COMPENSATION
BUFFER,
DRIVER
5
4
VOUT
VDD
CE
GND
EXT
ERROR
AMP
PWM
COMPARATOR