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APPENDIX
FUNCTIONAL DESCRIPTION
O.V.P.volt age 20.5V
Shutdown voltage 11V
8-2-1. STR-F6653 oscillating operation
STR-F6653
OSC
Comp.2
C1
R1
Vin
16V (TY P.)
Waveform of Vin pin voltage at start- up
DRIVE
Comp.1
V th(1)
1.35mA
V th(2)
Oscillating operation
Rg2
Rg1
8
t
3
TO PIN4
SM PS
DRAIN
2
SOURCE
R808
1
OCP/FB
From PIN 6
SM PS
(FEEDBACK)
C850
R804
5
GND
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