Read Sharp 28JW-74H (serv.man11) Service Manual online
31
28JW-74H
1
PIN FUNCTIONS
Pin
Number
Name
Function
1
-V
CC
Negative supply
2
-V
CC
Negative supply
3
-V
CC
Negative supply
4
OUT
PWM Output
5
CFLY+
Flyback capacitor
6
CFLY-
Flyback capacitor
7
BOOT
Bootstrap capacitor
8
VREG
Internal voltage regulator
9
FEEDCAP
Feed-back integrating capacitor
10
FREQ
Frequency setting resistor
11
SGND
Signal Ground
12
IN-
Error amplifier inverting input
13
IN+
Error amplifier non-inverting input
14
EA out
Error amplifier output
15
+V
CC
Positive supply
16
+V
CC
POW
Positive Power supply
17
-VccPOW
Negative Power supply
18
-V
CC
Negative supply
19
-V
CC
Negative supply
20
-V
CC
Negative supply
STV9380 (IC502)
PIN CONNECTION
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
-V
CC
-V
CC
-V
CC
-V
CC
-V
CC
-V
CC
-V
CC
POW
+ V
CC
POW
+V
CC
EAout
IN+
IN-
SGND
SGND
OUT
CFLY +
CFLY -
BOOT
VREG
FEEDCAP
FREQ
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