
NUD4001, NSVD4001
1
Q1
8
R ext1
2.0 W , 1/4 W
2 7
3 NUD4001 6
R ext2
110 k, 1/4 W
4
5
LED1
LXHL ? MW1D
V bat +
12 Vdc ?
PWM
Q2
2N2222
LED2
LXHL ? MW1D
LED3
LXHL ? MW1D
0
Figure 9. NUD4001 Device Configuration for PWM
12 Vac from:
60 Hz Transformer or
Electronic Transformer
D1
MURA105T3
D2
MURA105T3
R2
2.0 W , 1/4 W
C1
220 m F
Q2
1 8
2 7
3 NUD4001 6
5
4
LED1
Luxeon Emitter
350 mA
LED2
Luxeon Emitter
350 mA
D3
MURA105T3
D4
MURA105T3
LED3
Luxeon Emitter
350 mA
0
Figure 10. 12 Vac landscape lighting application circuit using the
NUD4001 device to drive three 350 mA LEDs.
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