LB1921 Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LB1921

Three-Phase Brushless Motor Driver for OA Applications

SANYO -> Panasonic 

Pin Assignment

LB1921

Pin Functions

Pin No.

1

2

3

4

5

6

7

8

9

10

11

Symbol

5V

7V

VCC

FGIN+

FGIN–

FGOUT

CR

OUT1

OUT2

OUT3

GND2

12

F/R

13

S/S

14

20, 19

18, 17

16, 15

21

22

23

VM

IN1+, IN1–

IN2+, IN2–

IN3+, IN3–

Xtal

GND1

LD

24

DOUT

25

INTIN

26

INTOUT

27

POUT

28

FGSOUT

Function

5-V power supply

7-V power supply

Power supply for all blocks other than the output block

FG pulse input (4-V power supply)

FG pulse input

FG amplifier output

PWM oscillator frequency setting

Output 1

Output 2

Output 3

Output block ground

Forward/reverse control

Low: forward, high: reverse

Start/stop control

Low: start, high: stop

Used both as the power supply for the output block and as output current detection. The output current can be

converted to a voltage and detected by inserting the resistor Rf between this pin and VCC.

Hall input for OUT1

Hall input for OUT2

Hall input for OUT3

Crystal oscillator connection. Connect a crystal oscillator element to this pin.

Ground for all blocks other than the output block

Lock detector

This pin goes low when the motor speed is within the lock range (±6.25%).

Speed discriminator output

Over speed → high

Integrator input

Integrator output (speed control)

PLL output

FG amplifier output (after the Schmitt trigger circuit)

No. 5439-4/10

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