LB1981V データシートの表示（PDF） - SANYO -> Panasonic

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LB1981V

Three-Phase Brushless Motor Driver

SANYO -> Panasonic 

Continued from preceding page

Pin number Pin name Pin voltage

18

PGOUT

LB1981V

Equivalent circuit

VCC1

30µA

30kΩ

18

Pin function

FG amplifier output pin.

19

OSC

5µA

2.5µA

1kΩ

10µA

A10867

VCC1

Pin for connecting triangular

wave oscillator capacitor.

Serves for forced startup

waveform generation.

20

FC1

22

FC2

21

FILTER

19

VCC1

2kΩ

2kΩ

2s

5kΩ

10kΩ

10kΩ

A10868

20

A10869

VCC1

22

FC2

VCC1

A10870

25µA

30kΩ

1kΩ

1kΩ

1kΩ

1kΩ

29

1

2

21

A10871

Frequency characteristics pin.

Connecting a capacitor

between this pin and ground

serves to prevent closed-loop

oscillation in the current

control circuitry.

(Lower-side output transistor

drive current)

Frequency characteristics pin.

Connecting a capacitor

between this pin and ground

serves to prevent closed-loop

oscillation in the current

control circuitry.

(Lower-side output transistor

drive current)

Connecting a capacitor

between this pin and ground

activates the coil output

saturation prevention function.

In this condition, the VS pin is

controlled for motor voltage

control.

By adjusting the external

capacitor, torque ripple

compensation can be varied.

Continued on next page

No. 5917-6/9

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