LX1996

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 21

Copyright

© 2007

Rev. 1.0, 2007-12-14

Multi-string LED Back-light Controller

TM

®

PCB LAYOUT GUIDE

GND

C3

4.7uF/50V

R5

100k

R6

22.1k

R3

68.1k

C7

C2

2.2nF

C1

0.1uF

R4

4.99k

Thermistor

R2

1M

L1

SLF6028T-4R7M1R6-PF

U1

LX1996

Vcc

24

EN

1

+5V

2

DSEL1

3

DSEL2

4

DI

5

OT

6

AGND

12

PRG

11

RT

8

CT

9

CLF

10

PWM

7

CS2

14

N/C

23

CS1

13

CS6

18

CS5

17

CS4

16

CS3

15

OVP

19

PGND

20

SRC

21

DRV

22

Q1

Si2308DS

R1

0.075

J2

FH12F-10S-0.5SH

1

2

3

4

5

6

7

8

9

10

D1

1N5819

C5

4.7uF

R7

N/U

C4

J1

SM07B-SRSS-TB

1

2

3

4

5

6

7

F1

3.15 A

5V

5V

5V

SOT23

1206

Powermite

Unless otherwise specified:

- PCB dimension = 10mm x 40mm

- All resistors are in ohm, and 0603 size

- All capacitors size are 0603

Vin (6 - 28V)

EN

DI

PWM

GND

6 x 6 mm

6.4 x 9.1mm

4.95 x 8mm

5V

DSEL1

100k

R8

Figure 2 – LX1996 Example Schematic