Mitsubishi Electric XD8100U Service Manual page 121
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Also See for XD8100U:
- User manual (75 pages) ,
- Overview (4 pages) ,
- Brochure & specs (8 pages)
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SUB UCOM PCB-MAIN (4/9)
IC741 BD45275G-TR
VDD
5
oscillator
counter timer
Vref
3
1
GND
ER
IC745, IC746 MP2367DNE-LF-Z
+
1.0V
–
+
FB 5
110KHz/340KHz
0.3V
–
–
+
SS 8
ERROR
0.795V
+
AMPLIFIER
6
COMP
–
EN
7
EN OK
LOCKOUT
2.5V
+
COMPARATOR
+
1.3V
–
SHUTDOWN
COMPARATOR
LAN UCOM PCB-MAIN (6/9)
IC703 RT9701-GB
4
EN
Current
Bias
Charge
Control
Pump
Oscillator
Thermal
Detection
IC743, IC744 NL17SZ07DFT2G
1
NC
4
Vout
2
2
SUB
3
GND
Function Table
A Input
OVP
RAMP
∑
OSCILLATOR
CLK
–
CURRENT
+
COMPARATOR
6A
1.2V
3
VIN
RS
Limit
NMOSFET
1,5
VOUT
2
GND
5
VCC
OVT
4
OUT Y
Y Output
L
L
H
Z
CURRENT
2
SENSE
AMPLIFIER
+
5V
–
1
M1
0.13Ω
S
Q
3
R
Q
M2
1.2Ω
4
OVP
IN < 4.05V
IN
INTERNAL
REGULATORS
IC705 93LC86CT-I*SN
Vcc
Vss
8
MEMORY
ARRAY
DETA REGISTER
3
DI
MODE
6
DECODE
ORG*
LOGIC
1
CS
7
PE*
2
CLOCK
CLK
REGISTER
* ORG and PE inputs are not available on A/B devices.
- B7 -
IC747, IC748
NC7SB3157P6X(PBF)
6
1
B1
2
5
GND
3
4
B0
Function Table
Input (S)
Function
L
B0 Connected to A
H
B1 Connected to A
H: HIGH Logic Level
L:LOW Logic Level
IC749, IC74A NC7SZ08P5X(PBF)
A
1
IN
B
2
GND
3
BS
Function Table
Inputs
SW
A
L
L
H
GND
H
H : HIGH Logic Level
L : LOW Logic Level
5
ADDRESS
DECODER
ADDRESS
COUNTER
4
OUTPUT
BUFFER
S
Vcc
A
5
VCC
4
Y
Output
B
Y
L
L
H
L
L
L
H
H
DO
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