L6238S datasheet(7/31 Pages) STMICROELECTRONICS

Teilenummer	L6238S

Bauteilbeschribung	12V SENSORLESS SPINDLE MOTOR CONTROLLER

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

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7 / 31 page

ELECTRICAL CHARACTERISTICS (Continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

BRAKE DELAY

Vchrg

Capacitor Charge Voltage

RT = 50K

8.8

9.6

10.5

V

Iin

Input Current

Vin = 5.0V

500

nA

Iout3

Source Current

VA = 10.5V

0.5

mA

VThres

Delay Timer Low Trip Threshold

1.2

1.8

2.8

V

CHARGE PUMP

Vout

Storage Capacitor Output

Voltage

VA = 10.5V; Iout = 500

µA17

V

Fcp

Charge Pump Frequency

140

450

KHz

Iin

Vstorage Input Current (Run

Mode)

Vstorage = 12V; VA =Vlogic =0

25

µA

Ibrkdly

Vstorage Leakage Current

(Brake Delay Mode)

Vstorage = 12V; VA =Vlogic = 0

0.4

1

µA

Ibrake

Vstorage Leakage Current

(Brake Mode)

Vstorage = 12V; VA =Vlogic = 0

0.1

1

µA

SEQUENCE INCREMENT

tseq

Time Between Rising Edges

1

µs

OUTPUT TRANSCONDUCTANCE AMPLIFIER Note: Measure at OTA Comp. pin.

Voh

Voltage Output High

VA = 10.5V

10

V

VoutL

Output Voltage

2.0

V

Isource

Output Voltage

40.0

0.5

V

Isink

Output Sink Current

40.0

µA

LOGIC SECTION

VinH

VinL

Input Voltage (All Inputs

Except Run/Brake

Vlogic = 4.5 to 5.5V

3.5

1.5

V

VinH

VinL

Run/Brake Input Voltage

Vlogic = 4.5 to 5.5V

2.0

1.0

V

IinH

IinL

Input Current

-1.0

1.0

µA

mA

VoutL

VinL

Output Voltage

Vsink = 2.0mA

Vsource = 2.0mA

4.5

0.5

V

Fsys

System Clock Frequency

8.0

12.0

MHz

toff/ton

Clock ON/OFF Time

20

ns

Tdelay (2)

Tdelay (1)

Tdelay (0)

Commutation Phase Delay,

in Electrical Degrees

1

0

1

2.0

1

0

9.4

1

18.80

1

0

20.68

0

1

22.56

0

24,44 (*)

0

1

26.32

0

1

0

28.20

(*) Input Default

Phase Delay Truth Table

L6238S

7/31

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