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

6

PW

LB1978V

Equivalent circuit

Vcc

7

PV

8

IV

9

VI

10

BRI

PGND

Vcc

SGND

Vcc

SGND

Vcc

6

7

1kΩ

8

1kΩ

9

1kΩ

SGND

Vcc

10

Pin function

CI pin waveform and reference voltage

comparator output pin.

Current buffer input/output pin.

Current-to-voltage converter comparator

input pin.

Voltage-to-current converter input pin.

Speed increases when VI pin voltage is

higher than reference voltage and

decreases when VI pin voltage is lower

than reference voltage.

Brake bias pin.

When S/S pin is Low and BR1 pin is 0.9V

or higher, brake drive pin BR2 goes ON.

SGND

Continued on next page

No. 6186-6/9

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