LB1996 查看數據表（PDF） - SANYO -> Panasonic

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LB1996

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

SANYO -> Panasonic 

LB1996

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

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

100µA

VCC1

10kΩ

14 15

Reverse detector pin

Forward rotation: High

Reverse rotation: Low

1 Hall element or 3 Hall elements

waveform Schmitt comparator

A11172 combined output

U phase Hall element input and

reverse detector U phase Schmitt

8

200Ω

10

12

25µA

VCC1 comparator input pin

25µA

Logic High indicates UIN1 > UIN2.

7

9

200Ω 11

V phase Hall element input and

reverse detector V phase Schmitt

comparator input pin

Logic High indicates VIN1 > VIN2.

25µA

W phase Hall element input and

reverse detector W phase Schmitt

A11173

comparator input pin

Logic High indicates WIN1 > WIN2.

VCC1

Hall element lower side bias voltage

75µA

supply pin

13

30kΩ

2kΩ

75kΩ

17

50kΩ

VCC1

VCC1

2kΩ

20

20kΩ 5kΩ

A11174

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.

A11175

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.

A11176

Continued on next page

No. 5977-7/9

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