LB1998 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LB1998

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

SANYO -> Panasonic 

LB1998

Pin Descriptions

Pin number Pin name Pin voltage

Equivalent circuit

Pin function

19

VCC2

4V to 13.6V

Source side predrive voltage and

constant current control amplifier

voltage supply pin

17

VCC1

4V to 6V

9

RS

Power supply pin for all circuits

except output transistors, source

predriver, and low current control

amplifier

100µA

10 kΩ

VCC1

89

Reverse detector pin

Forward rotation: High

Reverse rotation: Low

8

FG

15

UIN1

16

UIN2

11

13 200Ω

13

14

VIN1

VIN2

1.2V to

15

VCC1–1V

25µA

11

WIN1

12

WIN2

75µA

1 Hall or 3 Hall element waveform

Schmitt comparator combined

A11196

output

U phase Hall element input and

VCC1 reverse detector U phase Schmitt

25µA

comparator input pin

12

Logic High indicates UIN1 > UIN2.

14 V phase Hall element input and

200Ω 16

reverse detector V phase Schmitt

comparator input pin

25µA

Logic High indicates VIN1 > VIN2.

A11197

W phase Hall element input and

reverse detector W phase Schmitt

comparator input pin

Logic High indicates WIN1 > WIN2.

VCC1

Hall element lower side bias voltage

supply pin

10

10

VH

30 kΩ

2 kΩ

6

S/S

0V to WCC1

75 kΩ

6

50 kΩ

A11198

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.

5

SIG GND

24

FC

A11199

VCC1

2 kΩ

24

20 kΩ

5 kΩ

A11200

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.

Continued on next page

No. 5979-7/9

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