LB11995H データシートの表示（PDF） - SANYO -> Panasonic

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LB11995H

Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive

SANYO -> Panasonic 

LB11995H

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Pin number Pin name Pin voltage

5

VCREF

0V to VCC1

–1.5V

4

VC

0V to VCC1

15µA

200Ω

4

Equivalent circuit

25µA

25µA

51kΩ

15µA

VCC1

200Ω

5

Pin function

Control reference voltage supply

pin. Determines control start

voltage.

Speed control voltage supply pin

V type control technique

VC > VCREF : Forward

VC < VCREF : Slowdown

(Reverse-blocking circuit

prevents reverse rotation.)

2

WOUT

1

PWR GND

28

VOUT

27

UOUT

23

RF

7

LMC

12

BRAKE

3.9Ω

3.9Ω

VCC1

100µA

A12359

VCC2

23

27 28 2

1

A12360

W phase output

Output transistor GND

V phase output

U phase output

Upper side output NPN transistor

collector pin (common for all 3

phases). For current detection,

connect resistor between VCC3

pin and RF pin. Constant current

control and current limiter works

by detecting this voltage.

RF

5kΩ

7

15kΩ

When this pin is connected to GND,

the limiter setting current is

increased by a factor of 1.5.

7kΩ

A12361

VCC1

75kΩ

12

50kΩ

Short brake pin

BRAKE:

High –> Short brake operation

Low/Open –> Motor drive operation

A12362

No. 6116-9/10

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