Representative Schematic Diagram
AP34063
UNIVERSAL DC/DC CONVERTER
Drive 8
Collector
Ipk 7
Sense
6
VCC
Comparator 5
Inverting
Input
1 Switch
Collector
SQ
Q2
R
Q1
100
2 Switch
Emitter
Ipk
CT
Oscillator
Comparator
+
_
1.25V
Reference
Regulator
3 Timing
Capacitor
4
Gnd
(Bottom View)
AP34063 Rev. 5
DS31004
6 of 11
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JULY 2009
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