Datasheet

TOP242-250
15
I
4/03
Figure 15. Half Frequency Standby Mode (For High Standby
Efficiency).
Figure 13. Full Frequency Operation (132 kHz). Figure 14. Half Frequency Operation (66 kHz).
Typical Uses of FREQUENCY (F) Pin
PI-2654-071700
DC
Input
Voltage
+
-
D
S
C
CONTROL
F
PI-2655-071700
DC
Input
Voltage
+
-
D
S
C
CONTROL
F
PI-2656-040501
DC
Input
Voltage
+
-
D
S
C
STANDBY
Q
S
can be an optocoupler output.
CONTROL
F
20 kΩ
R
HF
1 nF
Q
S
47 kΩ