U3848/A/B/C

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

11 of 13

www.unisonic.com.tw

QW-R103-033,B

TYPICAL APPLICATION CIRCUIT

5V 3A

+

GND

IC2

CY1

C2

IC1

RF

R2

CD1 RD1

D1

C5

+

R5

R4

R3

R12

L3

TR1

D3

C8

D2

Q1

R6

R

C4

R17

+

C3

C15

R11

C14

IC3

R7

UTC

U3848 /

A/B/C

4

3

2

1

5

6

7

8

TH1

CX1

AC IN

F1

BD1

+

C9

FIG.12 U3848/A/B/C Typical Application Circuit

Table1 Components Reference description for U3848/A/B/C application circuit

C12

CC

10nF/1000V

D3

Diode

UF1007

R

R

470KΩ

1/8W

C14

CC

100nF/50V

IC1

IC

PC817

TH1

SCK-103

C2

CC

33nF/50V

IC2

IC

TL431CLP

BD1

R

KBP-208

CX1

104/275V

IC3

IC

U3848/A/B/C

RD1

R

10Ω

1/8W

C5

EC

1000uF/15V

L3

L

1.2uH

R12

R

3.3kΩ

1/8W

C4

CC

22uF/50V

Q1

MOS

4N60

TR1

optional

C8

EC

68uF/400V

R7

R

68KΩ

1/8W

RF

R

4.7kΩ

1/8W

C9

EC

1000uF/16V

R17

R

1.2Ω/1W

1/8W

C15

CC

0.1µF/50V

CD1

CC

1nF/1KV

R2

R

680Ω

1/8W

CY1

CC

4.7nF/250V

R3

R

ADJ

1/8W

D1

Diode

C63-004

R4

R

5.6KΩ

1/8W

D2

Diode

1N4148

R5

R

5.6KΩ

1/8W

Note:

C5 and C9 are lower ESR capacitors.