Analog Integrated Circuit Device Data

Freescale Semiconductor

3

33926

PIN CONNECTIONS

PIN CONNECTIONS

Figure 3. 33926 Pin Connections

Table 1. 33926 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

IN2

Logic Input

Input 2

and when IN2 is logic LOW, OUT2 is set to PGND. (Schmitt trigger input with

~80

µA source so default condition = OUT2 HIGH.)

2

IN1

Logic Input

Input 1

and when IN1 is logic LOW, OUT1 is set to PGND. (Schmitt trigger Input with

~80

µA source so default condition = OUT1 HIGH.)

3

SLEW

Logic Input

Slew Rate

Logic input to select fast or slow slew rate. (Schmitt trigger input with ~80

µA

sink so default condition = slow.)

4, 6, 11, 31

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.

5,

Exposed

Pad

AGND

Analog

Ground

Analog Signal

Ground

The low current analog signal ground must be connected to PGND via low

impedance path (<<10 m

Ω, 0 Hz to 20 kHz). Exposed copper pad is also the

main heatsinking path for the device.

7

INV

Logic Input

Input Invert

Sets IN1 and IN2 to logic LOW = TRUE. (Schmitt trigger input with ~80

µA sink

so default condition = non-inverted.)

8

FB

Analog

Output

Feedback

Load current feedback output provides ground referenced 0.24% of H-Bridge

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

9, 17, 25

NC

No Connect

No internal connection is made to this pin.

10

EN

Logic Input

Enable Input

When EN is logic HIGH, the device is operational. When EN is logic LOW, the

device is placed in Sleep mode. (logic input with ~80

µA sink so default

condition = Sleep mode.)

Transparent Top

25

17

18

19

20

21

22

23

24

910 11 12 13 14 15 16

1

2

3

4

5

6

7

8

26

27

28

29

30

31

32

NC

NC

NC

IN2

IN1

SLEW

AGND

INV

FB

VPWR

VPWR

AGND

PGND

SF

PGND

PGND

PGND

PGND

PGND

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