LB1988N データシートの表示（PDF） - SANYO -> Panasonic

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LB1988N

Three-Phase Sensorless Motor Driver + Loading Motor Driver

SANYO -> Panasonic 

Pin Functions

Pin No. Symbol

Voltage

LB1988N

Function

1

FC

Frequency characteristics correction.

Insert a capacitor between this pin and ground to

prevent closed-loop oscillation in the current control

system.

Equivalent circuit diagram

VREG

1 kΩ

1

10 kΩ 5 kΩ

Speed control.

2

VC

0 V to VREG

This circuit implements a constant-current control

scheme in which current feedback from the RF pin is

applied.

V CC

50 µF 50 µF

V REG

27 kΩ

2

40 k

200 Ω

24 kΩ

Control system power supply.

3

VREG

4 V to 6 V This power supply must be stabilized to prevent

ripple or other noise entering the circuit.

4

PGIN+

PG amplifier + input.

This input is biased at 1/2 VREG internally.

6 µF 6 µF 6 µF

V REG

10 kΩ

5

PGIN–

PG amplifier - input.

200 Ω

5

200 Ω

4

10 kΩ

6

PGOUT1

PG amplifier linear output.

60 µF

38 Ω

38 Ω

V REG

30 µF

6

5 kΩ

5 kΩ

4

Continued on next page.

No. 6185-6/9

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