MP157 –SMALLEST ENERGY EFFICIENT OFF-LINE REGULATOR WITH EXTENDED POWER RANGE

MP157 Rev. 1.04

www.MonolithicPower.com

18

6/27/2016

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TYPICAL APPLICATION CIRCUITS

Figure 12 shows a typical application example of a 12V, 350mA non-isolated power supply using

MP157.

L

N

10uF/400V

C4

10uF/400V

C5

1mH

L1

D3

1N4007

D6

1N4007

D5

STTH1R06

100uF/25V

C6

GND

VOUT

GND

220nF

C1

19.6K

R1

4.99K

R4

NC

R3

Drain

5

Source

4

Vcc

1

FB

2

Source

3

U1

MP157

2.2uF

C2

10/1W

F1

1uF

C7

470pF

C3

85~265VAC

12V/350mA

D4

1N4007

D7

1N4007

3K

R7

D2

1N4007

1N4148WS

D1

24K

R2

NC

R5

1.2mH

L2

33nF

CX1

Figure 12: Typical Application at 12V, 350mA