Pin N°

Name

Description

21, 22

Vdd

5 V Regulator referred to Ground

23

VL

High logical state setting voltage

24

CONFIG

Configuration pin

25

PWRDN

Stand-by pin

26

TRI-STATE

Hi-Z pin

27

FAULT

Fault pin advisor

28

TH-WAR

Thermal warning advisor

29

IN1A

Input of half bridge 1A

30

IN1B

Input of half bridge 1B

31

IN2A

Input of half bridge 2A

32

IN2B

Input of half bridge 2B

33, 34

VSS

5 V regulator referred to + VCC

35, 36

VCC Sign

Signal positive supply

Table 2. Functional pin status

Pin name

Logical value

IC-STATUS

FAULT

0

Fault detected (Short circuit, or Thermal ..)

FAULT (1)

1

Normal operation

TRI-STATE

0

Allpowers in Hi-Z state

TRI-STATE

1

Normal operation

PWRDN

0

Low absorbion

PWRDN

1

Normal operation

THWAR

0

Temperature of the IC = 130 °C

THWAR (1)

1

Normal operation

CONFIG

0

Normal Operation

CONFIG (2)

1

OUT1A = OUT1B; OUT2A=OUT2B (If IN1A = IN1B; IN2A = IN2B)

1. The pin is open collector. To have the high logic value, it needs to be pulled up by a resistor.

2. To put CONFIG = 1 means connect Pin 24 (CONFIG) to Pins 21, 22 (Vdd).

STA508

Pin configuration

DS3503 - Rev 6

page 4/19