Ic Data Sheets - Philips ME8 Service Manual

Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.4

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).
9.4.1 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
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
FB1
GATE(H)1
GATE(L)1
GND
BST
IS+1
IS−1
V
FB1
COMP1
A
WL
Y
WW = Work Week
Figure 9-4 Internal block diagram and pin configuration
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
COMP1 V COMP2
FB2
SO−16
1 16
GATE(H)2
GATE(L)2
V
CC
R
OSC
IS+2
IS−2
V
FB2
COMP2
= Assembly Location
= Wafer Lot
= Year
Q528.2E LA
RAMP2
RAMP1
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
9. EN 123