No. 5791-5/8

LA6503

Pin Functions

Pin No.

Symbol

Function

1

SLED OUT

+

Sled motor noninverted output

2

SLED OUT

–

Sled motor inverted output

3

P-GND

Power system ground

4

P-GND

Power system ground

5

SLED-IN

Sled motor signal input (The gain is set with a resistor.)

6

Signal system power supply (5 V)

7

Reference voltage input

8

Three-phase spindle motor hall signal input pin (U phase –)

9

Three-phase spindle motor hall signal input pin (U phase +)

10

Three-phase spindle motor hall signal input pin (V phase –)

11

Three-phase spindle motor hall signal input pin (V phase +)

12

Three-phase spindle motor hall signal input pin (W phase –)

13

Three-phase spindle motor hall signal input pin (W phase +)

14

VHB (3Vreg)

Hall bias output pin (3-V power supply output)

15

HB

–

Sled motion distance detection hall element input (HB –)

16

HB

+

Sled motion distance detection hall element input (HB +)

17

HA

–

Sled motion distance detection hall element input (HA –)

18

HA

+

Sled motion distance detection hall element input (HA +)

19

S-GND

Signal system ground

20

P-GND

Power system ground

21

P-GND

Power system ground

22

MUTE

Sled motor output muting (output on/off control)

23

START/STOP

Spindle motor output start/stop (output on/off control)

24

FC

Phase compensation capacitor connection

25

VC

Input for the spindle control signal from the ASP

26

WOUT

Three-phase spindle motor output (W phase output)

27

VOUT

Three-phase spindle motor output (V phase output)

28

UOUT

Three-phase spindle motor output (U phase output)

29

RF

Output current detection

30

FG

FG signal output

31

Motor power supply (12 V)

32

POUT

Sled motion position detection pulse output P (96 pulses)

33

ROUT

Sled motion position detection pulse output R (48 pulses)

34

QOUT

Sled motion position detection pulse output Q (48 pulses)

Ambient temperature, Ta – ˚C

Mounted on the specified

printed circuit board

Independent IC