iW1707

Low-Power Off-Line Digital Green-Mode PWM Controller

iW1707

L

+

GND

+

U1

iW1707

ASU

OUTPUT

GND

1

5

3

6

4

2

N

Figure 3.2: iW1707 Alternate Application Circuit

(Using NPN BJT as Active Start-up Device)

L

+

GND

+

U1

iW1707

ASU

OUTPUT

GND

1

5

3

6

4

2

N

Figure 3.3: iW1707 Alternate Application Circuit without Active Start-up Device

Note: Pin 3 (ASU) can be left unconnected if an active start-up device is not needed in the application circuit.