Sony STR-DA2800ES Service Manual page 134

STR-DA2800ES
IC3903, 3904 ISL8023A
16
VIN 1
VDD 2
PG 3
ISET
THRESHOLD
+
SLOPE
COMP
SYNC 4
SOFT
START
BANDGAP
SHUTDOWN
5 6 7 8
– ACDC Board –
IC921 STR-Y6763
D/ST 1
DRIVER
OVERCURRENT
PROTECTION/
S/OCP 2
BOTTOM-SKIP
UNDER VOLTAGE
LOCK OUT/
VCC 3
REGULATOR/
CONSTANT CURRENT
GND 4
LATCH
FEEDBACK/
STANDBY
OVERLOAD
FB/OLP 5
PROTECTION
BOTTOM
BD 6
DETECTION
NF 7 OSCILLAOTR
134
–
+
CSA
SHUTDOWN
OCP
+
–
PWM/PFM
SKIP
+
CONTROLLER
–
COMP
PROTECTION
HS DRIVER
OSCILLATOR
SCP
0.5 V
0.85 V
+
VREF
EAMP
–
+
+
–
0.6 V –
+
STARTUP
LOGIC
15 14 13
LS
DRIVER
LOGIC
NEG CURRENT
SENSING
ZERO-CROSS
SENSING
1 ms
DELAY
UV
OV
SHUTDOWN
12 PGND
11 PGND
10 SGND
9 FB