UPS703

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

10 of 12

www.unisonic.com.tw

QW-R119-015.C

TYPICAL APPLICATION CIRCUIT

F1

LINE

NEUT

8

10

7

6

R13

VIN

SS

DRAIN

DRAIN

FB

2

5

4

7

6

8

1

3

IC1

4

3

12V/1A

GND

ZNR1

BD1

YC3

T1

C6

R10

C9

IC3

1

2

D3

XC1

R4

IC2

R1

D1

C2

R5

R2

D2

L2

C4

C10

R8

C5

CS

GND

R15

R6

9

1

3

4

R3

L1

1

3

2

4

4-

+1

2

3

C1

C8

LD2

R7

C7

C3

L3

1

3

2

4

12W

R12

R14

R9

R11

2

FIG.10 UPS703 Typical Application Circuit

Table1. Components reference description for UPS703 application circuit

DESIGNATOR

PART TYPE

DESIGNATOR

PART TYPE

DESIGNATOR

PART TYPE

C1

22μF

R1

1.3Ω

D1

FR107

C2

102P

R2

68KΩ

D2

SB3100

C3

22μF

R3

2.2MΩ

D3

US1D

C4

470μF

R4

2.2MΩ

IC1

UPS703

C5

470μF

R5

1MΩ

IC2

PC-817

C6

104P

R6

0Ω

IC3

TL431

C7

103P

R7

0Ω

T1

EE22

C8

102

R8

15Ω

L1

UU9.8

C9

104

R9

560Ω

L2

2μH

C10

220μF

R10

1KΩ

L3

Ring Choke

R11

3.9KΩ

LD2

LED

R12

15KΩ

F1

1.0A/250V

R13

5.1KΩ

ZNR1

7D471K

R14

1.8KΩ

XC1

154P/275V

R15

1.5MΩ~4.0 MΩ

BD1

B6S

YC3

222