Analog Integrated Circuit Device Data

Freescale Semiconductor

3

34931

PIN CONNECTIONS

PIN CONNECTIONS

Figure 3. 34931 Pin Connections

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

Table 1. 34931 Pin Definitions

Pin

Number

Pin

Name

Pin

Function

Formal Name

Definition

2

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.

3

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.)

5

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.)

7, 8, 25, 26

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.

10, 11

OUT1

Power

Output

H-bridge Output 1

Source of HS1 and drain of LS1.

15-18

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.

22, 23

OUT2

Power

Output

H-bridge Output 2

Source of HS2 and drain of LS2.

28

CCP

Analog

Output

Charge Pump

Capacitor

External reservoir capacitor connection for the internal charge pump;

connected to VPWR. Allowable values are 30 nF to 100 nF. Note: This

capacitor is required for the proper performance of the device.

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

PGND

PGND

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

32 SOICW-EP

Transparent Top View

SF

IN1

IN2

CCP

VPWR

OUT2

OUT2

PGND

PGND

32

31

30

29

28

27

26

25

24

23

N/C

N/C

AGND