ISL6421 datasheet(2/10 Pages) INTERSIL

Part #	ISL6421

Description	Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-top Box Designs

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Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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2 / 10 page

2

Pinout

ISL6421ER (32 LEAD 5X5 QFN)

TOP VIEW

Typical Application Schematic

PGND

NC

SGND

SEL18V

NC

BYPASS

PGND

GATE

CPSWOUT

NC

AGND

VOUT

DSQIN

TCAP

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17

32

31

30

29

28

27

26

25

910

11

12

13

14

15

16

VIN = 8V TO 14V

C4

1

µF

C2

56

µF

C1

1

µF

Q1

FDS6612A

VOUT

C5

C8

ISL6421

VCC

SGND

GATE

CS

PGND

COMP

FB

VSW

VOUT

DSQIN

TCAP

AGND

BYPASS

CPSWIN

CPSWOUT

CPVOUT

+

D1

STPS2L40U

C7

+ C3

56

µF

L1

33

µH

R1

0.1

R3

C6

SCL

SDA

ADDR

C9

C10

C11

R2

SEL18V

ISL6421

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Intersil Corporation	ISL6423B	264Kb / 16P	Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs April 10, 2007
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