MP3391—8-CHANNEL, 120mA/CH STEP-UP WLED DRIVER CONTROLLER

MP3391 Rev. 1.11

www.MonolithicPower.com

15

3/14/2013

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2013 MPS. All Rights Reserved.

TYPICAL APPLICATION CIRCUIT

0

R3

NC

R2

10

R17

NC

C7

VIN

GND

FF

EN

1

DIMMING

C3

2

1

JP1

NC

C4

C1

F1

L1

B360

D1

NC

C8

C5

C2

C6

357k

R1

1k

R6

10k

R9

100pF

C9

R4

1

LED+

LED1

LED2

LED3

LED4

LED5

LED6

LED7

LED8

LED9

LED10

LED11

LED12

LED13

LED14

LED15

LED16

10

R18

10

R20

10

R22

10

R24

10

R25

10

R27

10

R29

10

R39

10

R40

10

R41

10

R42

10

R44

10

R45

10

R46

10

R48

C12

0

R8

NC

R5

2k

R19

20k

R21

NC

R31

130k

R30

NC

R28

332k

R26

NC

C14

15.4k

R23

470nF

C15

NC

C13

100k

R16

51.1k

R15

2k

R13

20k

R14

10k

R7

C10

0

R12

C11

NC

R32

VIN

NC

R34

FF

NC

R35

C16

VCC

NC

R36

COMP

NC

R37

NC

C19

100k

R38

NC

C20

15.4k

R43

470nF

C21

SSET

NC

R49

NC

R47

VCC

0

R33

VFAULT

NC

C17

NC

C18

OVP1

0.05

R10

NC

R11

10V-28V

10S 8P 80mA/string

Set to 6.3V

VCC

3

2

AM4499P

M3

NC

28

DBRT

6

OSC

7

VCC

3

LED6

18

LED3

15

OVP

22

ISENSE

24

SSET

12

NUMSEL

21

TSET

10

ISET

11

GND

8

BOSC

9

COMP

4

EN

5

FF

26

VIN

2

LED8

20

LED7

19

LED5

17

LED4

16

LED2

14

LED1

13

VDD

1

PGND

23

GATE

25

VFAULT

27

MP3391EY

U1

NC

28

DBRT

6

OSC

7

VCC

3

LED6

18

LED3

15

OVP

22

ISENSE

24

SSET

12

NUMSEL

21

TSET

10

ISET

11

GND

8

BOSC

9

COMP

4

EN

5

FF

26

VIN

2

LED8

20

LED7

19

LED5

17

LED4

16

LED2

14

LED1

13

VDD

1

PGND

23

GATE

25

VFAULT

27

MP3391EY

U2

NC

NC

R50

NC

C23

M2

M1

Figure 7— 2 MP3391 Extended Solution for 16 Strings Application