LX1681/1682

PRODUCT DA T ABOOK 1996/1997

9

Copyright © 1999

Rev. 1.0 5/99

APPLICA TION INFORMA TION

FIGURE 3 — Current Sensing Using Sense Resistor

FIGURE 4 — Bootstrap Circuit For 5V Only Operation

LX1681

V

BOOST

12V

8

7

6

5

4

3

2

1

V

FB

SS

N.C.

GND

V

CC

CS

V

C1

TDRV

V

IN

5V

C

SS

V

OUT

R

SET

R

1

R

2

C

3

C

1

Q

1

D

2

L

1

C

2

0.1µF

R

SENSE

LX1682

8

7

6

5

4

3

2

1

V

FB

SS

GND

BDRV

V

CC

CS

V

C1

TDRV

V

IN

5V

C

SS

V

OUT

R

SET

R

1

R

2

C

2

L

1

Q

1

Q

2

C

1

C

4

0.1µF

D

2

PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document

may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of

all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.