AD8143

Rev. 0 | Page 10 of 24

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

REF_G

GND

IN+_G

FB_G

REF_R

IN–_G

GND

FB_R

OUT_B

GND

OUT_R

OUT_G

COMPB_IN+

GND

COMPB_IN–

AD8143

TOP VIEW

(Not to Scale)

A

B

32

31

30

29

28

27

26

25

9

10

111213141516

24

23

22

21

20

19

18

17

1

2

3

4

5

6

7

8

Figure 3. 32-Lead LFCSP Pin Configuration

Note exposed pad on underside of device must be connected to ground.

Table 6. 32-Lead LFCSP Pin Function Descriptions

Pin No.

Mnemonic

Description

1, 8, 9,16, 17, 24, 25, 32

GND

Signal Ground and Thermal Plane Connection (See the Applications Section)

2

REF_G

Reference Input, Green Channel

3

FB_G

Feedback Input, Green Channel

4

IN+_G

Noninverting Input, Green Channel

5

IN−_G

Inverting Input, Green Channel

6

REF_R

Reference Input, Red Channel

7

FB_R

Feedback Input, Red Channel

10

IN+_R

Noninverting Input, Red Channel

11

IN−_R

Inverting Input, Red Channel

12

COMPA_IN+

Positive Input, Comparator A

13

COMPA_IN−

Negative Input, Comparator A

14

COMPA_OUT

Output, Comparator A

15

COMPB_OUT

Output, Comparator B

18

COMPB_IN−

Negative Input, Comparator B

19

COMPB_IN+

Positive Input, Comparator B

20

Positive Power Supply

21

OUT_R

Output, Red Channel

22

OUT_G

Output, Green Channel

23

OUT_B

Output, Blue Channel

26

Negative Power Supply

27

DIS/PD

Disable/Power Down

28

REF_B

Reference Input, Blue Channel

29

FB_B

Feedback Input, Blue Channel

30

IN+_B

Noninverting Input, Blue Channel

31

IN−_B

Inverting Input, Blue Channel

Exposed Underside Pad

GND

Signal Ground and Thermal Plane Connection (See the Applications Section)