LB1971V データシートの表示（PDF） - SANYO -> Panasonic

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LB1971V

Three-Phase Full-Wave Sensorless CD and MD Players Spindle Motor Driver

SANYO -> Panasonic 

Continued from preceding page.

Pin No. Symbol

Pin voltage

LB1971V

Function

VCC1

Equivalent circuit

• Frequency characteristics determination

9

FC

Closed loop oscillation of the current

9

control system can be stopped by

2 kΩ

connecting a capacitor between this pin

and ground.

10

DET

11

CSLP1

12

CSLP2

13

GND

14

CX

15

16

NC

22

VCC1

• Drive waveform sink side envelope

detection

Nothing connected to this pin in normal

operation.

30 kΩ

1 kΩ

1 kΩ 1 kΩ 1 kΩ

2

1 23 10

• Connection for the capacitor used for

triangular wave generation

The soft switching operation of the coil

output waveform is created using this

triangular waveform.

•Ground

• Clock oscillator used by the sensorless

logic

Connect a capacitor between the CX pin

and ground.

Oscillator frequency must be set up to

60 kHz.

VCC1

1 kΩ

11 12

1 kΩ

14

VCC1

• Unused

Continued on next page.

No. 6214-8/9

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