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IC603 MPC18A20MTAEL
21
22
23
24
25
26
2728
29
30
16
17
18
19
20
2
3
5
4
6
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1
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15
CONTROL
LOGIC
CHARGE PUMP
SAW
GEN
SAW
CLK
OSC
EFM
LOGIC
BIAS
VREF
PRE
DRIVER
VREF
COMP
COMP
+
PRE DRIVER
SAW
CLK
EN ENB
OP
RF
SS
DTC
NC
PGNDLG
VB
VIN
C1H
VGH
C1L
VCC
CK
COSC
MODE 1
MODE 2
INM
ERRID
ERRIV
GND
VSET
VG
VGI
PGNDG
PGNDB
HB
HA
PGNDA
GND
EFM
VERF
IC605 XC6367B103MR
VDD
VOUT
CE
GND
EXT
1
2
3
5
4
VLX
LIMITER
PWM/PFM
CONTROL
OSC 100kHz
BUFFER
PHASE
COMPARATOR
REFERENCE
VOLTAGE
CHIP
ENABLE
SLOW
START
+
–
VDD
IC803 XC6383C301MR
IC902 RN5RG25AA-TR
+
–
1
3
5
4
2
VREF
GND
VDD
VOUT
CE
EXT
1
2
3
CHIP
ENABLE
+
–
+
–
VREF
2STEP PFM CONTROL
OSC 100/180kHz
VLX LIMITER
5
4
VDD
CE
VOUT
NC
VSS
LX
BUFFER