Philips 40PFL8664H/12, Service Manual

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IC Data Sheets EN 41 Q548.1E LB 8.
2009-Dec-18
8. IC Data Sheets
This chapter shows the internal block diagrams and pin
configurations of ICs that are drawn as “black boxes” in the electrical diagrams (with the exception of “memory” and “logic”
ICs).
8.1 Diagram SSB: DC/DC +3V3 +1V2 B01A, NCP5422AD (IC 7103)
Figure 8-1 Internal block diagram and pin configuration
Block Dia g ram
Pin Confi g uration
F_15400_129.ep s
240505
V
CC
S et
Domin a nt
I S +1
PWM
Comp a r a tor 1
PWM
Comp a r a tor 2
Re s et
Domin a nt
CURRENT
S OURCE
GEN
B S T
FAULT
BIA S
FAULT
R
S
R
S
R
S
RAMP1
GATE(H)1
5.0 A
0.425 V
0.25 V
COMP1
−
+
−
+
− +
−
+
−
+
−
+
−
+
−
+
−
+
COMP2
V
FB1
RAMP2
FAULT
FAULT
Re s et
Domin a nt
GATE(L)1
GATE(H)2
GATE(L)2
GND
V
CC
B S T
V
CC
RAMP1
RAMP2
CLK1
CLK2
O S C
0.425 V
1.0 V
E/A2
E/A OFF
E/A1
E/A OFF
R
O S C
Q
1.2 mA
V
FB2
1.0 V
V
CC
−
+
−
+
I S −1
I S +2
I S −2
− +
− +
8 .6 V
70 mV
70 mV
B S T
7. 8 V
FAULT
FAULT
non−overl a p
non−overl a p
A = A ss em b ly Loc a tion
WL = W a fer Lot
Y = Ye a r
WW = Work Week
V
FB1
COMP1
I S +1
GATE(H)1
GATE(L)1
GND
B S T
I S −1
1 16
GATE(H)2
GATE(L)2
V
CC
R
O S C
I S +2
I S −2
V
FB2
COMP2
W
W
Y
L
W
A
A
2
2
4
5
P
C
N
S O−16