MP4050 – NON-ISOLATED, HIGH BRIGHTNESS, LED DRIVER

MP4050 Rev.1.02

www.MonolithicPower.com

17

1/18/2016

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TYPICAL APPLICATION CIRCUITS

Figure 13 shows a typical application example of a 40V, 115mA non-isolated buck topology power

supply using MP4050.

N

10Ω/1W

FR1

L

WUGC10JH

600V/1A

D1

47uF/50V

C4

1mH

L1

4.7uF/400 V

C3

4.7uF/400 V

C2

40V/115mA

3.3Ω/1%/1206

R3

10K

R5

2.2uF/10V

C1

LED+

LED -

3.3Ω/1%/1206

R4

VCC

1

PRO

2

GND

3

SOURCE

4

DRAIN

5

U1

MP4050

MB6S

600V/0.5A

BD 1

9.31K/1%/0603

R1

200 K/1%/1206

R2

4.7mH

L2

200K

R6

85VAC~265VAC

100pF /50V

R5

Figure 13: Typical Buck Converter Application