PT2463

V1.1

4

April 2013

PIN DESCRIPTION

Pin Name

I/O

Description

Pin No.

OSCM

I/O

External pin for system clock RC oscillator

1

PHASE_A

I

Phase-A output current direction select

2

PHASE_B

I

Phase-B output current direction select

3

ENABLE_A

I

Phase-A enable, high=driver on, GND=driver off.

4

ENABLE_B

I

Phase-B enable, high=driver on, GND=driver off.

5

STBX

I

Power down mode; connect to GND will disable OSCM and output driver.

6

LGND

-

GND for logic circuit

7, 26

RSA

I

External current sense resistor A; connect to high side of H-bridge, also the

negative input of current sense circuit.

8, 9

OUTA+

O

H-bridge driver A positive output

10, 11

PGND

-

H-bridge driver A GND

12

OUTA-

O

H-bridge driver A negative output

13, 14

PGND

-

H-bridge driver B GND

15

OUTB-

O

H-bridge driver B negative output

16, 17

PGND

-

Power GND

18

OUTB+

O

H-bridge driver B positive output

19, 20

RSB

I

External current sense resistor B; connect to high side of H-bridge, also the

negative input of current sense circuit.

21, 22

VHS

O

Smoothing filter for built-in regulator for high side driver

23

VM

-

Main supply for the motor, also the positive input of current sense circuit.

24

VDD

I

Smoothing filter for built-in regulator for logic

25

VREFB

I

Apply a DC potential to determinate output peak current of the PAHSE B

driver

27

VREFA

I

Apply a DC potential to determinate output peak current of the PHASE A

driver

28