LB11995 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LB11995

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

SANYO -> Panasonic 

LB11995

Pin Descriptions

Pin number Pin name Pin voltage

3

VCC2

4V to 13.6V

4

VCC3

4V to 13.6V

6

VCC1

4V to 6V

14

RS

15

FG

8

UIN1

7

UIN2

10

VIN1

1.2V to

9

VIN2

VCC1–1V

12

WIN1

11

WIN2

13

VH

17

S/S

0V to VCC1

18

SIG GND

20

FC

Equivalent circuit

100µA

10kΩ

VCC1

14 15

A12341

8

200Ω

10

12

25µA

75µA

25µA

25µA

VCC1

7

9

200Ω 11

A12342

VCC1

13

Pin function

Source side predrive voltage supply

pin

Constant current control amplifier

voltage supply pin

Power supply pin for all circuits

except output transistors, source

predriver, and constant current

control amplifier

Reverse detector pin

Forward rotation: High

Reverse rotation: Low

1 Hall element waveform Schmitt

comparator composite output

U phase Hall element input and

reverse detector U phase Schmitt

comparator input pin

Logic High indicates UIN1 > UIN2.

V phase Hall element input and

reverse detector V phase Schmitt

comparator input pin

Logic High indicates VIN1 > VIN2.

W phase Hall element input and

reverse detector W phase Schmitt

comparator input pin

Logic High indicates WIN1 > WIN2.

Hall element lower side bias voltage

supply pin

30kΩ

2kΩ

75kΩ

17

50kΩ

A12343

VCC1

When this pin is at 0.7V or lower, or

when it is open, all circuits are

inactive. When driving motor, set

this pin to 2V or higher.

VCC1

2kΩ

20

20kΩ 5kΩ

A12344

GND pin for all circuits except

output

Control loop frequency compensa-

tor pin. Connecting a capacitor

between this pin and GND prevents

closed loop oscillation in current

limiting circuitry.

A12345

Continued on next page

No. 6112-8/10

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