6

FN7678.0

September 3, 2010

Pin Configuration

D2-24044

38 LD HTSSOP

TOP VIEW

1

2

3

4

5

6

7

8

9

10

11

12

38

37

36

35

34

33

32

28

27

26

25

24

23

13

14

15

16

17

31

30

29

OUTB

HSBSA

HSBSB

HGNDB

HVDDB

REG5V

VDDHV

IREF

HVDDC

HGNDC

OUTC

HSBSC

HSBSD

OUTD

HGNDD

HVDDD

18

19

nPDN

OUTA

PWMGND

HGNDA

HVDDA

PWM3

PWM4

PWM5

PWM6

PWM7

PWM8

PWMGND2

PWM2

PWM1

nOVRT

PWMVDD

OCFG0

OCFG1

nERRORA

nERRORB

nERRORC

nERRORD

22

21

20

Pin Description

PIN

PIN NAME

(Note 7)

TYPE

VOLTAGE

LEVEL

(V)

DESCRIPTION

1

nPDN

I

3.3

Power-down and mute input. Active low. When this input is low, all 4 outputs become

inactive and their output stages float, and their output is muted. Internal logic and other

references remain active during this power-down state.

2

OCFG1

I

3.3

Output configuration control select. OCFG0 and OCFG1 are logic inputs to select the

output configuration mode of the output stages. Connects to either PWMGND ground or

PWMVDD (+3.3V) through nominal 10kΩ resistor to select output configuration.

3

OCFG0

I

3.3

Output configuration control select. OCFG0 and OCFG1 are logic inputs to select the

output configuration mode of the output stages. Connects to either PWMGND ground or

PWMVDD (+3.3V) through nominal 10kΩ resistor to select output configuration.

4

PWMGND

GND

0

Low-voltage ground. Connects to ground of circuitry providing PWM inputs. Both

PWMGND and PWMGND2 are to tie together to the same ground.

5

PWMVDD

P

3.3

Low-voltage power. This 3.3V supply connects to the same system low-voltage power

used for providing PWM inputs.

6

nOVRT

O

3.3

Over-temperature warning output. Open drain, 16mA drive strength output with pull-up.

Pulls low when active from over-temperature detection.

7

PWM1

I

3.3

PWM Input. Routes to output channel, dependent on output configuration settings.

8

PWM2

I

3.3

PWM Input. Routes to output channel, dependent on output configuration settings.

9

PWM3

I

3.3

PWM Input. Routes to output channel, dependent on output configuration settings.

10

PWM4

I

3.3

PWM Input. Routes to output channel, dependent on output configuration settings.

11

PWM5

I

3.3

PWM Input. Routes to output channel, dependent on output configuration settings.

12

PWM6

I

3.3

PWM Input. Routes to output channel, dependent on output configuration settings.

D2-24044