Mitsubishi Electric LC62 CHASSIS XL6500LU Service Manual page 99

DIGITAL2 PCB-MAIN
IC705 NC7SZ08P5X(PBF)
A  5 VCC
B 2
GND 3 4 Y
Function Table
Inputs Output
A B Y
L L L
L H L
H L L
H H H
H : HIGH Logic Level
L : LOW Logic Level
IC726 NC7SB357P6X(PBF)
6

S
B
2 5
GND Vcc
3 4
A
B0
Function Table
Function
Input (S)
L
B0 Connected to A
H
B Connected to A
H: HIGH Logic Level
L:LOW Logic Level
IC740 MP593DN-LF-Z
2
IN
Internal
Slope
Regulators
Compensation
Oscillator
40/385KHz
CLK
Shutdown
Comparator
0.7V µA
EN 7
2.285/2.495V
Lockout
Comparator
0.7V .22V
Frequency
Error Amplifier
Foldback
gm= 800µA/Volt
Comparator
5
FB
IC720 ISL83220ECVZ-T
TTL/CMOS
LOGIC LEVELS
IC727 NC7SZ57P6X(PBF)
I
GND
I2
Function Table
Inputs
S I
L X
L X
H L
H X
H : HIGH Logic Level
L : LOW Logic Level
+
Current
5V
Sense
Amplifier
S Q
R Q
Current
Comparator
.8V
00K
6 8
COMP SS
+3.3V
+
0.F
5
2
V CC
C 
C+
+
0.µF
4
C–
5
C 2
C2+
+
0.µF
6
C2–
T 

T IN
9
R OUT
R 

EN
GND
4
 6 S

2 5 VCC
0
3 4 Z
Output
I0 X=(I0)•(S)+(I)•(S)
L L
H H
X L
X H
 BS
M
3 SW
M2
4 GND
- B5 -
+ C 3
3
V+
0.µF
7
C 4
V–
+ 0.µF
3
T OUT
RS-232
LEVELS
8
R IN
5k
6
V CC
SHDN
IC735 PQM335M2SPQ
IC752 PQM255M2SPQ
4
Vin
3 CONTROL
Vc
2
GND
5
Vo

Nr