nud4011 ON Semiconductor, nud4011 Datasheet - Page 7

• Manufacturer Part Number: nud4011
• Description: Low Current Led Driver
• Manufacturer: ON Semiconductor

+
−
120 Vac 60 Hz
Switch
Figure 10. 120 Vac Application with PWM / Enable Function, 30 LEDs in Series (3.0 V, 20 mA)
Figure 9. 120 Vdc Application with PWM / Enable Function, 30 LEDs in Series (3.0 V, 20 mA)
VARISTOR
200 V
+
−
Rectifier
Bridge
120 Vdc
2
Full
TYPICAL APPLICATION CIRCUITS (continued)
35 W, 1/4 W
Switch
1
+
−
4
PWM /
ENABLE
3
1.0 k
PWM
Boost
http://onsemi.com
R
200 V
Electrolytic
Cap
V
ext
in
35 W, 1/4 W
R
80 k, 1/4 W
Q1
200 V
+
−
shunt
1
2
3
4
7
PWM /
ENABLE
1.0 k
NUD4011
Set Point
Current
PWM
Boost
R
V
ext
in
R
80 k, 1/4 W
Q1
200 V
shunt
1
2
3
4
8
7
6
5
L
I
I
I
I
NUD4011
Set Point
out
out
out
out
L
L
ED30
Current
ED1
ED2
8
7
6
5
L
I
I
I
I
out
out
out
out
L
L
ED30
ED1
ED2