MP4012 ─ HIGH-VOLTAGE, HIGH-CURRENT ACCURACY WLED CONTROLLER

MP4012 Rev. 1.12

www.MonolithicPower.com

13

10/12/2013

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TYPICAL APPLIACTION CIRCUIT

SYNC

8

CS

5

VDD

2

CL

9

OVP

12

ISET

15

RT

7

GND

4

VIN

1

REF

10

PWM

13

FB

16

SL

6

GATE

3

FAULT

11

COMP

14

U1

MP4012/SO16

C1

C2

C7

L1

D2

US1G

C9

33nF

C10

220pF

C12

3k

R12

R4

R6

1.58k

R5

NC

C5

NC

C6

30k

R9

560k

R8

21k

R11

10k

R15

4.3k

R14

9.09k

R13

C13

3.32

R22

21.5k

R20

953k

R21

2k

R16

LED+

LED-

1k

R1

20.5k

R2

1nF

C4

1k

R19

NC

R7

VIN

PWM

A-DIM

SYNC

NC

R18

C3

Fault

12VIN

NC

R17

REF

REF

M1

M2

220pF

C8

100nF

C11

NC

R3

NC

D1

NC

R23

NC

R24

20

R10

NC

C14

NC

C15

8

5

2

7

1

3

4

6

CN1

Figure 5—MP4012 Boost Application