Ic Data Sheets - Philips 32PF9968/10 Service Manual

Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.6

IC Data Sheets

This section 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).
9.6.1 Diagram B02A, NCP5422AD (IC 7U00)
Block Diagram
8.6 V
7.8 V
IS+1
IS−1
−
70 mV
IS+2
IS−2
−
70 mV
Pin Configuration
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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 = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
Figure 9-7 Internal block diagram and pin configuration
CURRENT
SOURCE
GEN
CLK1
OSC
CLK2
S
Reset
Dominant
FAULT
PWM
Comparator 1
R
FAULT
RAMP1
0.425 V
−
S
+
Reset
FAULT Dominant
PWM
Comparator 2
R
FAULT
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
Q522.1E LA
RAMP1 RAMP2
BST
BST
GATE(H)1
non−overlap
V
CC
GATE(L)1
BST
GATE(H)2
non−overlap
V
CC
GATE(L)2
GND
FAULT
F_15400_129.eps
240505
9. EN 125