Ic Data Sheets - Philips 32PFL3904H/12 Service Manual

8. IC Data Sheets

This chapter shows the internal block diagrams and pin
configurations of ICs that are drawn as "black boxes" in the
8.1 Diagram SSB v1: DC/DC +3V3 +1V2
Block Diagram
8.6 V
7.8 V
IS+1
IS−1
−
70 mV
IS+2
IS−2
−
70 mV
Pin Configuration
B01A, NCP5422AD (IC 7103)
V
R
CC
OSC
BIAS
V
CC
−
+
−
+
−
FAULT
S Q
Set
Dominant
−
R
+
0.25 V
−
E/A OFF
5.0 A
E/A1
1.0 V
V
COMP1
FB1
1
GATE(H)1
GATE(L)1
GND
BST
IS+1
IS−1
V
FB1
COMP1
A
WL
Y
WW = Work Week
Figure 8-1 Internal block diagram and pin configuration
IC Data Sheets
electrical diagrams (with the exception of "memory" and "logic"
ICs).
CURRENT
SOURCE
GEN
CLK1
OSC
CLK2
FAULT
PWM
Comparator 1
RAMP1
0.425 V
−
+
FAULT
PWM
Comparator 2
RAMP2
E/A OFF
0.425 V
1.2 mA
−
+
−
E/A2
1.0 V
V COMP2
FB2
SO−16
16
GATE(H)2
GATE(L)2
V
CC
R
OSC
IS+2
IS−2
V
FB2
COMP2
= Assembly Location
= Wafer Lot
= Year
Q543.1E LA
RAMP1 RAMP2
BST
BST
GATE(H)1
S
non−overlap
Reset
Dominant V
CC
GATE(L)1
R
FAULT
BST
GATE(H)2
S
non−overlap
Reset
V
Dominant
CC
GATE(L)2
R
FAULT
GND
FAULT
F_15400_129.eps
240505
8. EN 47
2009-Nov-20