NCP1205 controller equivalent, single ended pwm controller.
* Natural Drain Valley Switching for Lower EMI and Quasi--Resonant
Operation (QR)
* Smooth Frequency Foldback for Low Standby and Minimum Ripple
at Light--Load
targeting the newest International Energy Agency (IEA) recommendations for standby power.
The internal High--Voltage cur.
Pin No.
PDIP--8 PDIP--14 SOIC--16 Pin Name
1
1
1
HV
Function Startup rail
2
3
3
4
4
5
4
Demag
Zero primary--current
detection
5
FB
Feedback signal to
control the PWM
6
Ct
Timing capacitor
5
10
11
GND
The IC’s ground
NA
.
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