US1702

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

5 of 5

www.unisonic.com.tw

QW-R911-020.c



TYPICAL APPLICATION CIRCUIT

5V/1.6A

GND

C12

C5

L2

R7

C9

D3

C4

10

YC1

7

1

4

3

1

2

IC3

IC2

R9

R8

R12

5

D1

R1

C8

C2

L1

2

3

1

4

C1

BD1

B6S

F1

LINE

NEUT

C11

R11

R10

UTC

US1702

C6

R5

IC1

C3

D2

2

3

T1

Fig. 3 UTC US1702 Typical Application Circuit

Table1. Components reference description for UTC US1702 application circuit

DESIGNATOR

PART TYPE

DESIGNATOR

PART TYPE

DESIGNATOR

PART TYPE

C1

10μF/400V

R1

100KΩ

D1

FR107

C2

10μF/400V

R5

6.8KΩ

D2

RS1D

C3

10μF/50V

R7

30Ω

D3

SR39

C4

470μF/16V

R8

2.2KΩ

IC1

US1702

C5

220μF/16V

R9

510Ω

IC2

PC-817

C6

103pF

R10

5.1KΩ

IC3

TL431

C8

102pF/1KV

R11

5.1KΩ

YC1

102pF/400V

C9

102pF/100V

R12

15KΩ

T1

EE-19

C11

103pF

L1

1mH

C12

103pF

L2

2μH

F1

1A/250V

BD1

B6S

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exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

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presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.