Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.
9.3
IC Data Sheets
This section shows the internal block diagrams and pin layouts
of ICs that are drawn as "black boxes" in the electrical diagrams
(with the exception of "memory" and "logic" ICs).
9.3.1
Diagram HC, Type MC34063AD (U1)
Figure 9-1 Internal Block diagram and pin configuration
1
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
Driver
Collector
Ipk Sense
VCC
Comparator
Inverting
Input
2
3
4
5
6
7
8
S Q
R
Q2
Q1
100
Ipk
Oscillator CT
Comparator
+
–
1.25 V
Reference
Regulator
1
2
3
4
5
6
7
8
Drive
Collector
Ipk
Sense
VCC
Comparator
Inverting
Input
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
(Bottom View)
Internal Block Diagram
Pin Configuration
G_16250_035.eps
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