KA8329B 데이터 시트보기 (PDF) - Samsung

부품명

상세내역

제조사

KA8329B

3-PHASE CAPSTAN MOTOR DRIVER

Samsung 

KA8329B

VCR PRODUCTS

3. MOTOR SPEED CONTROL(INPUT CURRENT LIMITATION)

The maxmum output current is limitted by Pin 19 voltage as follows. So a motor speed is controlled by

the output current. In case of no-use, it is to be short-circuit with VCC1.

£ £ GML= Io/ VLIM=(Io2-Io1)/(VLIM2-VLIM1), where VLIM1=1.45V => Output current=Io1

VLIM2=1.55V => Output current=Io2

Output

Current

(Max)

19

0.67 A/V

0 1.25V

VLIM(Pin 19)

4. MOTOR SPEED CONTROL(INPUT VOLTAGE CONTROL )

ÿ The control of motor speed is possible on the conditions of VCTL(Pin 20) VREF.

The control gain is approx. 1.0 A/V as follows.

£ £ GM= Io/ VCTL=(Io2-Io1)/(VCTL2-VCTL1), where VREF=2.5V, VCTL1=2.6V => Output Current=Io1

VREF=2.5V, VCTL2=2.7V => Output Current=Io2

VCC1

20

Output

Current

(Max)

1.0 A/V

GOUT

0

VREF

VCTL(Pin 20)

5. VOLTAGE CONTROL REFERENCE

21

11

Rs

þ þ The input voltage range is 2V VREF (VCC1-2V).

PM-97-D012

April 1997.

Share Link: