TPD2004F

2006-10-31

3

Pin Description

Pin No.

Symbol

Pin Description

1

SQ1+

Squib positive (+) side output pin for channel 1

2

HSD1

High-side driver control input pin for Channel 1 (pull-down)

3

SS1

Safing sensor connect pin for channel 1

4

Backup block power supply input pin

5

SHTD

Control input pin for short diagnosis (pull-down)

6

ENB

INHIBIT input pin to inhibit ignition when this input is pulled low (pull-down)

7

AO

Analog multiplexer output pin

8

LSD1

Low-side driver control input pin for Channel 1 (pull-up)

9

SELT

Control input pin for switching between diagnosis line and analog multiplexer (pull-down)

10

SQ1-

Squid negative (-) side output pin for channel 1

(shared with reference resistor pin for short diagnosis)

11

SQ1REF

Shorting diagnosis reference resistor pin for channel 1

12, 13

GND

Ground pin (Two pins)

14

SQ2REF

Shorting diagnosis reference resistor pin for Channel 2

15

SQ2-

Squib negative (-) side output pin for channel 2 (shared with reference resistor pin shorting diagnosis)

16

SQS

Squib switchover control input pin during each squib diagnosis (pull-down)

17

LSD2

Low-side driver control input pin for Channel 2 (pull-up)

18, 19

5V block power supply input pin (two pins)

20

CS

Chip select control input pin (pull-up)

21

CCADJ

Current setup resistor connect pin for short diagnosis constant-current source (reference resistor

connect pin)

22

SS2

Safing sensor connect pin for Channel 2

23

HSD2

High-side driver control input pin for Channel 2 (pull-down)

24

SQ2+

Squib positive (+) side output pin for Channel 2