Sony PRS-505/SC Service Manual - Page 33
IC1802, LT3467ES6#TR, IC1805, LT1931ES5#TR, IC1806, TC7W53FK TE85R - drivers
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IC1802 LT3467ES6#TR SW 1 GND 2 FB 3 DRIVER COMPARA-TOR Q R + S + - 3 RAMP GENERATOR 1.3MHz OSCILLATOR + 1.255V REFERENCE 6 VIN - 5 SS SHUTDOWN 4 SHDN IC1805 LT1931ES5#TR SW 1 GND 2 LATCH Q R S 3 VIN RAMP GENERATOR 1.2MHz OSCILLATOR NFB 3 5 VIN 4 SHDN IC1806 TC7W53FK (TE85R) COMMON 1 INH 2 VEE 3 GND 4 LOGIC LEVEL CONVERTER C OUT IN C OUT IN 8 VCC 7 CH 0 6 CH 1 5A PRS-505 33
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PRS-505
33
IC1802
LT3467ES6#TR
+
–
1
SW
2
GND
DRIVER
COMPARATOR
VIN
SHDN
Q
R
S
+
–
RAMP
GENERATOR
1.3MHz
OSCILLATOR
3
FB
+
–
1.255V
REFERENCE
6
SS
5
SHUTDOWN
4
IC1805
LT1931ES5#TR
NFB
GND
SW
SHDN
VIN
1
2
3
5
4
R
S
Q
LATCH
RAMP
GENERATOR
1.2MHz
OSCILLATOR
VIN
IC1806
TC7W53FK (TE85R)
COMMON
1
INH
2
VEE
3
GND
4
CH 0
7
VCC
8
A
5
LOGIC
LEVEL
CONVERTER
C
OUT
IN
CH 1
6
C
OUT
IN