IW7032 datasheet(3/31 Pages) DIALOG

Part #	IW7032

Description	32-Channel LED Driver for LCD Panel Backlighting

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Manufacturer	DIALOG [Dialog Semiconductor]

Direct Link	http://www.dialog-semiconductor.com/

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iW7032

32-Channel LED Driver for LCD Panel Backlighting

Rev. 1.3

iW7032

Page 3

Pin #

Name

Type

Pin Description

1

EPGND

Ground

Exposed bottom pad used as the high current LED return current path.

2

GND1

Ground

Signal ground for FB1.

3

FB1

Analog Output

Analog DAC output interface with external Buck or Boost converter for LED

Boost/Buck group 1.

4, 5, 6, 7, 10,

11, 12, 13

LED00 - LED07

Analog Output

LED cathode connection for string 0 to string 7.

8, 9

EPGND

Ground

Exposed bottom pad used as the high current LED return current path.

14

EN

Digital Input

Enable Input. Logic high is defined as 3.3V.

15

LDO5

Analog Output

Internal +5V LDO output and analog power section supply.

16

LDO3

Analog Output

Internal +3.3V LDO output and digital power section supply.

17

EPGND

Ground

Exposed bottom pad used as the high current LED return current path.

18

VIN

Supply Input

Input voltage to the main supply rail.

19

AVSS

Ground

Analog ground return for LDO regulator.

20, 21, 22, 23,

26, 27, 28, 29

LED08 - LED15

Analog Output

LED cathode connection for string 8 to string 15.

24, 25

EPGND

Ground

Exposed bottom pad used as the high current LED return current path.

30

SCK

Digital Input

SCK, serial clock input for Serial Peripheral Interface (SPI). Logic high is

defined as 3.3V.

31

MOSI

Digital Input

Master output, slave input for SPI. Logic high is defined as 3.3V.

32

MISO

Digital 3 State

Output

Master input, slave output for SPI. Logic high is defined as 3.3V.

33

CSB

Digital Input

Slave select input for SPI (Chip Select Bar). Active LOW. Logic high is

defined as 3.3V.

34

GND2

Ground

Signal ground for FB2.

35

FB2

Analog Output

Analog DAC output interface with external Buck or Boost converter for LED

Boost/Buck group 2.

36, 37, 38, 39,

42, 43, 44, 45

LED16-LED23

Analog Output

LED cathode connection for string 16 to string 23.

40, 41

EPGND

Ground

Exposed bottom pad used as the high current LED return current path.

46

XO

Analog Output

External crystal connection XO pin with SYNCLK acting as XI pin.

47

SYNCLK

Digital Input

External clock input for the multiple chip system solution. Logic high is

defined as 3.3V.

48

EPGND

Ground

Exposed bottom pad used as the high current LED return current path.

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