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Número de pieza
componentes Descripción
UC3842TN Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
UC3842TN
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
STMicroelectronics
UC3842TN Datasheet PDF : 15 Pages
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UC3842T - UC3843T - UC3844T - UC3845T
Figure 24:
Soft-Start Circuit
8
4
2
1M
Ω
1
C
R
BIAS
R
5V
ref
+
-
OSC
+
+
-
EA
1mA
2R
R
S
Q
+
R
1V
-
5
D95IN354
Figure 25:
Soft-Start and Error Amplifier Output Duty Cycle Clamp.
V
CC
V
in
7
8
R
BIAS
R
5V
ref
+
-
4
OSC
+
2
R2
1
+
-
EA
1mA
V
Clamp
2R
-
+
R
1V
S
Q
R
Comp/Latch
5
C
R1 BC109
·
V
CLAMP
=
R
1
R
1
+ R
2
where 0 <V
CLAMP
<1V
I
pk(max)
=
V
CLAMP
R
S
7
6
Q1
5
R
S
D95IN355
12/15
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