MC33163 데이터 시트보기 (PDF) - Motorola => Freescale
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MC33163 Datasheet PDF : 16 Pages
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MC34163 MC33163
Figure 18. Representative Block Diagram
Ipk Sense
RSC
VCC
Timing Capacitor
CT
Shutdown
RDT
Gnd
8
0.25 V
+–
Current
Limit
+
7
+
6 Oscillator
R
5
Q
Thermal
S
4
Latch
+
9 Driver Collector
10
Switch Collector
Q1 11
Q2
12
60
Gnd
13
Voltage Feedback 1 3
14
Voltage Feedback 2 2
45 k
+ Feedback
+ +– Comparator
Switch Emitter
15
LVI Output 1
+
+–
LVI
1.25 V 15 k
+
1.125 V
2.0 mA
+ 7.0 V
16 Bootstrap Input
+
–
(Bottom View)
=
Sink Only
Positive True Logic
1
Comparator Output
0
1.25 V
Timing Capacitor CT
0.55 V
1
Oscillator Output
0
On
Output Switch
Off
Nominal Output
Voltage Level
Output Voltage
Figure 19. Typical Operating Waveforms
t
9t
Startup
Quiescent Operation
MOTOROLA ANALOG IC DEVICE DATA
7
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