LB1981 Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LB1981

Three-Phase Brushless Motor Driver

SANYO -> Panasonic 

Pin Descriptions

Pin number Pin name Pin voltage

3

STBY VCC1 max

–0.2V min

4 SEL CSLP VCC1 max

–0.2V min

5

FRC VCC1 max

–0.2V min

6

VS

0V to VCC2

LB1981V

Equivalent circuit

VCC1

100kΩ

3

100kΩ

A10858

VCC1

100kΩ

4

100kΩ

50kΩ

5

50kΩ

20µA

A10859

VCC1

A10860

7

VCC2 2.7V to 10V

8

VCC1 2.7V to 6V

9

CLSP1

10

CLSP2

8µA

4µA

1kΩ

VCC1

20µA

Pin function

When this pin is at 0.7V or

less or when it is open, only

the FG/PG amplifier operates.

In the motor drive state, the

pin should be at 2V or higher.

CSLP pin charge/discharge

current switching pin.

Setting this pin to 2V or higher

switches the triangular wave

slope that determines soft

switching.

Motor forward/reverse

switching pin.

Low: reverse

(–0.2V to +0.7V or open)

High: forward

(2V to VCC1)

Power supply pin for

determining output amplitude

by supplying motor voltage.

Must be lower than VCC2

voltage.

Power supply pin for supplying

source side predriver voltage

and coil waveform detect

comparator voltage.

Power supply pin for circuits

except motor voltage, source

side predriver voltage, and coil

waveform detect comparator

voltage.

Pins for connecting triangular

wave oscillator capacitor. This

triangular wave coil output

performs waveform soft

switching.

9 10

A10861

Continued on next page

No. 5917-4/9

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