Analog Integrated Circuit Device Data

Freescale Semiconductor

3

33931

PIN CONNECTIONS

PIN CONNECTIONS

Figure 3. 33931 Pin Connections

Table 1. 33931 Pin Definitions

A functional description of each pin can be found in the Functional Description section beginning on page 11.

Pin

Pin Name

Pin

Function

Formal Name

Definition

1

D1

Logic Input

Disable Input 1

(Active High)

When D1 is logic HIGH, both OUT1 and OUT2 are tri-stated. Schmitt trigger

input with ~80

μA source so default condition = disabled.

2

FB

Analog

Output

Feedback

The load current feedback output provides ground referenced 0.24% of the high

side output current. (Tie to GND through a resistor if not used.)

3

EN/D2

Logic Input

Enable Input

When EN/D2 is logic HIGH the H-bridge is operational. When EN/D2 is logic

LOW, the H-bridge outputs are tri-stated and placed in Sleep mode. (logic input

with ~80

μA sink so default condition = Sleep mode.)

4-6,40,39

VPWR

Power Input

Positive Power

Supply

These pins must be connected together physically as close as possible and

directly soldered down to a wide, thick, low resistance supply plane on the PCB.

7-9

OUT1

Power

Output

H-bridge Output 1

Source of high side MOSFET1 and drain of low side MOSFET1.

10,11,34,35

PGND

Power

Ground

Power Ground

High-current power ground pins must be connected together physically as

close as possible and directly soldered down to a wide, thick, low resistance

ground plane on the PCB.

36-38

OUT2

Power

Output

H-bridge Output 2

Source of high side MOSFET2 and drain of low side MOSFET2.

Tab

Tab

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

D1

FB

EN/D2

VPWR

VPWR

VPWR

OUT1

OUT1

OUT1

PGND

PGND

SF

IN1

IN2

CCP

VPWR

VPWR

OUT2

OUT2

OUT2

PGND

PGND

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

AGND