Analog Integrated Circuit Device Data

Freescale Semiconductor

3

33689

PIN CONNECTIONS

PIN CONNECTIONS

Figure 3. 33689 32-SOICW Pin Connections

Table 1. 33689 32-SOICW Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section beginning on page 19.

Pin

Pin Name

Formal Name

Pin Function

Definition

1, 3, 14

NC

No Connect

N/A

No internal connection to these pins.

2, 4

L1, L2

Level Inputs 1 and 2

Input

Inputs from external switches or from logic circuitry.

5–7

HS3–HS1

High-Side Driver

Outputs 3 through 1

Output

High-side (HS) drive power outputs. SPI-controlled for driving system

loads.

8, 9, 24, 25

TGND

Thermal Ground

N/A

Thermal ground pins for the device.

10

VS2

Voltage Supply 2

Input

Supply pin for the high-side switches HS1, HS2, and HS3.

11

LIN

LIN Bus

Input/Output

Bidirectional pin that represents the single-wire bus transmitter and

receiver.

12

GND

Ground

N/A

Electrical ground pin for the device.

13

VS1

Voltage Supply 1

Input

Supply pin for the 5.0 V regulator, the LIN physical interface, and the

internal logic.

15

VDD

5.0 V Regulator

Output

Output

Output of the 5.0 V regulator.

16

AGND

Analog Ground

N/A

Analog ground pin for voltage regulator and current sense operational

amplifier.

17

VCC

Power Supply In

Input

5.0 V supply for the internal current sense operational amplifier.

18

OUT

Amplifier Output

Output

Output of the internal current sense operational amplifier.

19

E

-

Amplifier Inverted

Input

Input

Inverted input of the internal current sense operational amplifier.

20

E+

Amplifier Non-Inverted

Input

Input

Non-inverted input of the internal current sense operational amplifier.

21

WDC

Watchdog

Configuration

(Active Low)

Reference

Configuration pin for the watchdog timer.

TXD

1

MISO

MOSI

SCLK

TGND

TGND

IN

RST

WDC

E+

OUT

VCC

E

-

CS

RXD

INT

NC

HS3

HS2

HS1

TGND

TGND

VS2

LIN

GND

VS1

VDD

AGND

NC

L2

L1

NC

8

9

10

11

12

13

14

15

16

3

4

5

6

7

2

32

25

24

23

22

21

20

19

18

17

30

29

28

27

26

31