SLFS040

– DECEMBER 1993

POST OFFICE BOX 655303

DALLAS, TEXAS 75265

5

Terminal Functions (Continued)

TERMINAL

I/O

DESCRIPTION

SUBSYSTEM§

NAME

NO.†

NO.‡

I/O

DESCRIPTION

SUBSYSTEM§

V

39

37

O

Spindle-phase V connection

SPN

VCMA

12

11

O

VCM driver output A

VCM

VCMB

17

12

O

VCM driver output B

VCM

VCMGND

11

7, 8, 9, 10

VCM driver supply ground

VCM

VCMREF

28

23

O

VCM voltage reference

VCM

VCMVCC

18

13

VCM driver supply voltage

VCM

VDD

10

4

O

Charge-pump voltage-tripler output

SPN

VIVCM

27

22

O

VCM current-sense output (VCM = 2 V)

VCM

VPHASE

33

28

O

Spindle-back-EMF-phase voltage

SPN

W

38

35, 36

O

Spindle-phase W connection

SPN

† 56-terminal DL package

‡ 64-terminal PM package

§ SPN = spindle, VCM = voice-coil motor, VM = voltage monitor, SP = serial port

8 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum voltage at U, V, W

8 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Spindle current at U, V, W

1.4 A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VCM current, VCMA, VCMB

0.41 A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150 C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

89 C/W

. . . . . . . . . . . . . . . . . . . . .

14 C/W

. . . . . . . . . . . . . . . . . . . . . . .

71 C/W

. . . . . . . . . . . . . . . . . . . . .

14 C/W

. . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range

0 C to 70 C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

–55 C to 125 C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

250 C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

¶ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under

“recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. All voltage values are with respect to ground.

2. The device is mounted on a printed-circuit board with 0.22 square inches of copper connected to the package tabs.

DISSIPATION RATING TABLE

PACKAGE

TA 25 C

POWER RATING

DERATING FACTOR

ABOVE TA = 25 C

TA = 70 C

POWER RATING

DL

1125 mW

9.0 mW/ C

720 mW

PM

1125 mW

9.0 mW/ C

720 mW