Sony PRS-505 Service Manual page 33

QQ
3 7 63 1515 0
IC1802 LT3467ES6#TR
SW 1 DRIVER
Q
+
–
GND 2
FB 3
IC1805 LT1931ES5#TR
SW
1
TE
L 13942296513
GND
2
NFB 3
IC1806 TC7W53FK (TE85R)
COMMON 1
INH 2
VEE 3
www
GND 4
.
http://www.xiaoyu163.com
COMPARATOR
+
–
–
R
+
S
RAMP
GENERATOR
1.3MHz
OSCILLATOR
LATCH
Q R
S
VIN
RAMP
GENERATOR
1.2MHz
OSCILLATOR
C
LOGIC
OUT IN
LEVEL
CONVERTER
x ao
y
C
i
OUT IN
http://www.xiaoyu163.com
8
1.255V
6 VIN
REFERENCE
5 SS
4
SHUTDOWN SHDN
VIN
5
Q Q
3 6 7 1 3
SHDN
4
8 VCC
7 CH 0
u163
.
6 CH 1
5 A
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
PRS-505
9 9
2 8 9 9
33