LB1894M 查看數據表（PDF） - SANYO -> Panasonic

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LB1894M

3-Phase Brushless Motor Driver for CD-ROM Spindle Motors

SANYO -> Panasonic 

Pin Functions

Pin No.

1, 2, 14,

15, 16,

17, 29,

30

Symbol

FRAME

(GND)

Pin voltage

3

FC

LB1894M

Equivalent circuit

Function

• Ground connection for all circuit except the outputs.

• Connect a capacitor between this pin and ground to

reduce the control input-output gain frequency

response and to stop the oscillator.

4

VCREF

1.5V min

VCC2 max

5

VC

0V min

VCC2 max

6

VCC 1

5 to 18V

7

UOUT

8

VOUT

9

WOUT

10

Rf

11

VCC 2

4.3 to 6.5V

• Speed control pins.

Pin 4 voltage determines the control start voltage.

Pin 5 voltage is used to control the output voltage

(voltage control method).

• Output-stage supply pin.

• Output pins.

• Output transistor ground.

A resistor can be connected between this pin and

GND to sense the output current as a voltage drop to

provide for overcurrent protection.

• Supply for all circuits except the output stage.

This supply should be kept stable to prevent ripple

and noise from sntering this pin.

Continued to next page.

No.4948–5/7

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