MP3383

– 4-STRING, MAX 80V VOUT, STEP-UP WLED CONTROLLER

MP3383 Rev. 1.0

MonolithicPower.com

19

5/2/2022

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

© 2022 MPS. All Rights Reserved.

TYPICAL APPLICATION CIRCUIT

Figure 3: Typical Application Circuit (8)

Note:

8)

Some components are adjustable based on real cases.

0

Ω

R2

NC

R1

R14 0Ω

1

VIN

1

GND

1

EN

1

PWM-DIM

4.7

μF/50V

C2

NC

C3

220

μF/35V

C5

PGND

F1

PGND

2

1

33

μH/5A

L1

B290

1

2

D1

NC

C7

PGND

2.2

μF/100V

C1

22

μF/100V

C4

2.2

μF/100V

C8

316k

Ω

R3

PGND

10k

Ω

R7

100pF

C9

1

LED+

1

LED1

1

LED2

1

LED3

1

LED4

R15 0

Ω

R16 0Ω

R18 0Ω

10

Ω

R4

2k

Ω

R20

100k

Ω

R19

2k

Ω

R22

100k

Ω

R12

0.47

μF

C10

470nF

C12

0.05

Ω

R5

PGND

10k

Ω

R17

0

Ω

R8

NC

C11

R13

NC

C14

NC

C13

1

M1

TO-252 or SO8

FDD861 02LZ/AM4490N

NC

C6

270

Ω

R9

AGND

PGND

AGND

AGND

200k

Ω

R11

1

ADIM

AGND

AGND

AGND

NC

R6

2k

Ω

R21

100k

Ω

R10

ISET

2

OSC

4

EN

5

COMP

11

VCC

8

VIN

9

LED4

1

LED3

16

LED2

14

LED1

13

OVP

3

GND

15

ISENSE

6

GATE

7

ADIM

10

MP3383

PWM

12

U1

2k

Ω