L6238SQA datasheet(4/31 Pages) STMICROELECTRONICS

Part #	L6238SQA

Description	12V SENSORLESS SPINDLE MOTOR CONTROLLER

Download	31 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

4 / 31 page

PIN FUNCTIONS

PLCC44 PQFP44 TQFP64

Name

I/O

Function

1

39

56, 57

OUTPUT B

I/O

DMOS Half Bridge Output and Input B for Bemf sensing.

2

40

58

SPIN SENSE

O

Toggless at each Zero Crossing of the Bemf.

3

41

59

BRAKE DELAY

I

Energy Recovery time constant, defined by external R-C to ground.

4

42

60, 61

Rsense 1

O

Outputs A+B connections for the Motor Current Sense Resistor

to ground

5

43

62

CHARGE

PUMP 2

I

Negative Terminal of Pump Capacitor.

6, 7,

17, 29,

39, 40

1, 11,

23, 33,

34, 44

*

GROUND

S

Ground terminals.

8

2

4

CHARGE PUMP 1

I

Positive terminal of Pump Capacitor.

9

3

5

CHARGE PUMP 3

O

Positive terminal of Storage Capacitor.

10

4

6, 7

OUTPUT A

I/O

DMOS Half Bridge Output and Input A for Bemf sensing.

11, 42

5, 36

9, 10,

52, 53

Vpower

S

Power Section Supply Terminal.

12

6

11

Vanalog

S

12V supply.

13, 32

7, 26

8, 18,

19, 31,

41

N.C

Open Terminal

14

8

12

Tdly(0)

I

Three bits that set the Delay between the detection of the Bemf

zero crossing, and the commutation of the next Phase.

15

9

13

Tdly(1)

I

16

10

14

Tdly(2)

I

18

12

20

OTWARN

O

Overtemperature Warning Output

19

13

21

SELECT POLE

I

Selects # of Motor Poles. A zero selects 8, while a one selects 4

poles.

20

14

22

PWM TIMER

I

Capacitor connected to this pin sets the maximum time allowed

for 100% duty cycle during PWM operation

21

15

23

PWM/LINEAR

I

Selects PWM or Linear Output Current Control

22

16

24

OUTPUT

ENABLE

I

Tristates Power Output Stage when a logic zero.

23

17

25

SEQUENCE

I

Rising edge will initiate start-up. A Braking rountine is started

when this input is brought low.

24

18

26

SEQ

INCREMENT

I

A low to high transition on this pin increments the Output State

Sequencer.

25

19

27

SYSTEM CLK

I

Clock Frequency for the system timer/counters.

26

20

28

MONO/SEQ.

INC. CONTROL

I

A logic one will disable the Monotonicity Detector and Sequence

Increment functions.

27

21

29

Falign

I

Reference Frequency for the opt. Auto-Start Algorithm. If int.

start up is not used, this pin must be connected to the System

Clock.

28

22

30

PWM COMP

O

Output of the PWM Comparator

30

24

35

Vlogic

S

5V Logic Supply Voltage.

31

25

36

Fmotor

O

Motor Once-per-Revolution signal.

33

27

37

Vcontrol

I

Voltage at this input controls he Motor Current

34

28

38

CSA INPUT

I

Input to the Current Sense Amplifier.

35

29

39, 40

Rsense 2

O

Output C connection for the Motor Current Sense Resistor to

ground.

36

30

42, 43

OUTPUT C

I/O

DMOS Half Bridge Output and Input C for Bemf sensing.

37

31

44

gm COMP

I

A series RC network to ground that defines the compensation of

the Transconductance Loop.

L6238S

4/31

Similar Part No. - L6238SQA

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	L6238	402Kb / 35P	SENSORLESS SPINDLE MOTOR CONTROLLER

More results

Similar Description - L6238SQA

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	L6238	402Kb / 35P	SENSORLESS SPINDLE MOTOR CONTROLLER
Micro Linear Corporatio...	ML4411	296Kb / 14P	Sensorless Spindle Motor Controller
Rohm	BA6966FV	182Kb / 6P	1ch Sensorless Spindle Motor Driver for MD
Fairchild Semiconductor	ML4425	167Kb / 16P	Sensorless BLDC Motor Controller
Micro Linear Corporatio...	ML4425	353Kb / 16P	Sensorless BLDC Motor Controller
Micro Linear Corporatio...	ML4435	576Kb / 14P	Sensorless BLDC Motor Controller
Fairchild Semiconductor	FAN8620B	475Kb / 35P	12V Spindle Motor and Voice Coil Motor Driver
	KA2811C	313Kb / 28P	12V Spindle Motor and Voice Coil Motor Driver
	FAN8621B	228Kb / 21P	12V Spindle Motor and Voice Coil Motor Driver IC
Micro Linear Corporatio...	ML4420	2Mb / 14P	ENHANCED SENSORLESS BLDC MOTOR CONTROLLER

More results

L6238SQA Datasheet(PDF) 4 Page - STMicroelectronics

L6238SQA Datasheet(HTML) 4 Page - STMicroelectronics

Similar Part No. - L6238SQA

Similar Description - L6238SQA

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Datasheet Download

Link URL