Application Circuits

Figure 8. Application Circuits for Driving 10S1P WLEDs

Figure 9. Application Circuit for Dimming Control Using a DC Voltage

Figure 10. Application Circuit for Dimming Control Using a Filtered PWM Signal

HT7938

Rev 1.10

7

March 19, 2010

H T 7 9 3 8

V I N

S W

O V P

F B

1 0 m H

1 m F

1 0 W

2 . 6 V ~ 5 . 5 V

1 N 5 8 1 9

1 0 L E D s

E N

G N D

P W M S i g n a l

1 m F

H T 7 9 3 8

V I N

E N

S W

O V P

F B

1 0 m H

G N D

1 N 5 8 1 9

1 0 k W

1 5 0 k W

2 . 6 V ~ 5 . 5 V

1 m F

1 m F

1 0 W

1 0 L E D s

V D C

0 V ~ 3 . 3 V

H T 7 9 3 8

V I N

E N

S W

O V P

F B

1 0 m H

G N D

1 N 5 8 1 9

1 0 k W

P W M S i g n a l

1 5 0 k W

0 . 1 m F

1 0 k W

3 . 3 V

0 V

2 . 6 V ~ 5 . 5 V

1 m F

1 m F

1 0 W

1 0 L E D s