HT7937 datasheet(9/13 Pages) HOLTEK

Part #	HT7937

Description	Built-in OVP White LED Step-up Converter

PDF	13 Pages

Scroll/Zoom	100%

Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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9 / 13 page

Application Circuits

6 WLEDs Application Circuit

Dimming Control with a PWM Signal

Dimming Control Using a DC Voltage

Dimming Control Using a Filter PWM Signal

HT7937

Rev 1.10

January 18, 2010

H T 7 9 3 7

V I N

S H D N

G N D

S W

O V P

F B

1 0 m H

C 1

1 m F

1 N 5 8 1 9

D 1

V I N

C 2

1 m F

R F B

4 . 7 W

U p t o

6 W L E D s

2 0 m A

N o t e : " L " S R 0 6 0 2 1 0 0 M L B

( A B C T a i w a n E l e c t r o n i c s C o r p . )

H T 7 9 3 7

V I N

S H D N

G N D

S W

O V P

F B

1 0 m H

C 1

1 m F

1 N 5 8 1 9

D 1

C 2

1 m F

R F B

4 . 7 W

V I N

U p t o

6 W L E D s

P W M

H T 7 9 3 7

V I N

S H D N

G N D

S W

O V P

F B

1 0 m H

C 1

1 m F

1 N 5 8 1 9

D 1

C 2

1 m F

R F B

4 . 7 W

V I N

1 k W

5 1 k W

R 1

R 2

V D C

0 V ~ 5 V

U p t o

6 W L E D s

H T 7 9 3 7

V I N

S H D N

G N D

S W

O V P

F B

1 0 m H

C 1

1 m F

1 N 5 8 1 9

D 1

C 2

1 m F

R F B

4 . 7 W

V I N

1 k W

5 1 k W

R 1

R 2

P W M

R 3

5 . 1 k W

C 3

0 . 1 m F

U p t o

6 W L E D s

HT7937 Datasheet(PDF) 9 Page - Holtek Semiconductor Inc

HT7937 Datasheet(HTML) 9 Page - Holtek Semiconductor Inc

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