Sony ICD-ST25 - Page 27

27
ICD-ST25
IC5003 XC9502B092AR (MAIN BOARD)
1
2
3
4
RAMP WAVE
GENERATOR1
RAMP WAVE
GENERATOR2
EXT1
VDD
FB1
PWM1
5
10
9
8
7
6
EN1
EXT2
GND
FB2
PWM2
EN2
EN1 TO
INTERNAL CIRCUIT
VREF1=0.9V
WITH SOFT START1,
EN1
VREF1=0.9V
WITH SOFT START2,
EN2
PWM/PFM
CONTROLLER1
PWM/PFM
CONTROLLER2
OSC
GENERATOR
EN2 TO
INTERNAL CIRCUIT
PWM
COMPARATOR1
PWM
COMPARATOR2
ERROR AMP1 ERROR AMP2
IC6003 NJU6366AF1(TE1) (MAIN BOARD)
1/2 1/2 1/2
3-STATE
BUFFER
13 2
64 5
FOUT VDD XXT
VSS
XT
XCONT
RF
CG CD
ABC D
1
2 3 5 6 7 8
10
16 15 14 13 12
11
CONTROL
CIRCUIT
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
VDD HPMUTE XLIGHT2 MONOMIC XBATTEN XDSPRST XFLMPWR
9
XADAPDN
SPAMP
XSTMIC
XREDLED
XGRLED
4
XLIGHT1
CLK
DATA
VSS
OUTPUT
BUFFER
(OPEN DRAIN)
IC7001 BU2090FS-E2 (MAIN BOARD)