MP4034 – OFFLINE LED DRIVER

MP4034 Rev. 1.02

www.MonolithicPower.com

16

12/4/2013

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TYPICAL APPLICATION CIRCUITS

Figure 14: Typical Application Example

Universal Input, Driving 14 LEDs in Series, 130mA LED Current, 6W Isolation Flyback Converter

U1

2.2nF/630V

C3

PGND

AGND

PGND

PGND

499k

R2

LED+

LED-

L

FR1

1mH/0.1A

L1

10k/0805

R1

BAV21W

D2

10/1W

200V/0.2A

1206

600V/0.5A

10V/0.35A

85VAC~265VAC

13.3k/1%

R5

PGND

D1

5

2

4

3

6

1

T1

10k

R7

EE13

1206

1206

PGND

AGND

BD1

MB6S

D3

ES1D/200V/1A

510

R3

0805

1206

20/0805

R4

Lp=1.1mH

1nF/4kV

CY1

C2

2.2uF/400V

4.7uF/400V

C1

22uF/16V

C5

32.4k/1%

R6

4.7uF/50V

C4

VCC

1

GND

2

FB

3

GND

4

GND

5

GND

6

Drain

8

MP4034/SOIC8-7A

Figure 15: Typical Application Example

Universal Input, Driving 3 LEDs in Series, 350mA LED Current, 3.5W Isolation Flyback Converter