UM608

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 4

www.unisonic.com.tw

QW-R105-043.a

TYPICAL APPLICATION CIRCUIT

UTC UM608

INPUT

OUT2

OUT1

GND

OUT

x

GND

COMP

UTC

UC3842

FB

ISENSE

BT+

BT-

DGND

+

-

BT1

48V

Rsense

0.1

D7

LED

R9

30k

FUSE2

C15

470µ

R26

6.8k

D5 ER804

C14

510p

R25

47

EC35

C7

10n

C2

FR206

R13

39k

C8

68µ

R12

150k

D3

HER107

R14

10

NT 5D

1N54

FUS

5

3

AC

AC

X2

C2

47n

N2AP817

d

C5

4.7n

R1

10k

R5

3.6k

C4

100n

R7 9.1K

C6

4.7n

C9

0.47n R19

910

R18 910

Rs

500m

R17

22

R3

10k

UTC

8N60

M2

D9

d

R15

10

C16

100µ

BT-

BT+

R10

500

R29

45.45k

org=21k

R32

1k

R34

15k

Q3

R36

100k

C13

10µ

R23

5.1k R6

3.6k

LED

D4

LED

D8

DGND

120kQc

1k

Comp1

2.2n

Rcomp1

470k

Rcomp2

22k

Comp2

2.2n

Comp1_1

22p

R28

2k

N5AP817_1

d

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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

whole or in part is prohibited without the prior written consent of the copyright owner. The information

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.