Sony STR-DA2800ES - Page 127

STR-DA2800ES
127
– NETWORK Board –
IC302, 2502 RT8252ALGSP
BOOT
1
VIN
2
SW
3
GND
4
FB
5
COMP
6
EN
7
SS
8
S
R
QQ

–
+
FOLDBACK
CONTROL
SLOPE COMP
UV
COMPARATOR
CURRENT
COMPARATOR
CURRENT SENSE
AMPLIFIER
SHUTDOWN
COMPARATOR
LOCKOUT
COMPARATOR
OSCILLATOR
0.8V
+ +
–
VA
VCC
2.7V 1.2V
VA VCC
EA
–
+
0.4V
INTERNAL
REGULATOR
–
+
–
+
+
–
IC304 MM3404Z11NRE
IC702 MM3404A12NRE
IC2503 MM3404A33NRE
VOUT
5
NC
4
CE 3
GND
2
VDD
1
+

VOLTAGE
REFERENCE
CURRENT
LIMIT
BIAS
IC305, 309 S-T111B33MC-OGSTFG
IC1099 S-T111B50MC-OHJTFG
+
–
4
5
1
2
ON/OFF
VOUT
VIN
VSS
3
NC
OVER CURRENT
PROTECTOR
REFERENCE
VOLTAGE CIRCUIT
ON/OFF
CIRCUIT
IC306, 312, 701 TK11133CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN