Current-mode PWM controller
Current-mode PWM controller
Current-mode PWM controller
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Philips Semiconductors Linear Products<br />
Product specification<br />
<strong>Current</strong>-<strong>mode</strong> <strong>PWM</strong> <strong>controller</strong><br />
UC3842<br />
SYNCHRONIZATION AND MAXIMUM DUTY CYCLE CLAMP<br />
<br />
R A<br />
2R B<br />
D MAX<br />
5V<br />
4 8<br />
R A<br />
RESET V CC<br />
7<br />
DISCH<br />
R B<br />
NE555<br />
OUT<br />
2<br />
6<br />
TRIG<br />
THRESH<br />
GND<br />
C<br />
1<br />
NOTES:<br />
1.44<br />
f <br />
(R A<br />
2R B<br />
) C<br />
R B<br />
3<br />
R T /C T<br />
TO OTHER<br />
UC3842s<br />
4<br />
V CC<br />
7<br />
UC3842<br />
5<br />
GND<br />
August 31, 1994 1107
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