LB1978 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LB1978

Three-Phase Half-Wave Sensorless Motor Driver for Headphone Stereos

SANYO -> Panasonic 

Continued from preceding page

Pin number Pin name

23

U1

24

V1

25

W1

LB1978V

Equivalent circuit

Vcc

23

24

25

Pin function

U1, V1, and W1 are pins for connection to

high-speed motor coils.

26

F/S

22

PGND

Vcc

26

High-speed/low-speed mode select pin.

Vcc –1.0V or lower: high-speed (fast)

Vcc –0.3V or higher: low-speed (slow)

27

DR

28

S/S

29

Vref

SGND

Vcc

27

SGND

Vcc

28

SGND

Vcc

29

Rotation direction select pin.

Vcc –0.3V or higher: phase sequence

U -> V -> W

Vcc –1.0V or lower: phase sequence

U -> W -> V

Start/stop pin.

0.9V or higher: Start

High active.

50µA

Reference voltage pin.

Reference voltage is 0.75V.

30

Vcc

SGND

Power supply pin.

No. 6186-8/9

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