LB1896 查看數據表（PDF） - SANYO -> Panasonic

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LB1896

3-phase Brushless Motor Driver for CD-ROM Spindle Drive Use

SANYO -> Panasonic 

Pin Functions

Pin No.

3, 4

20, 21

2

23

22

19

Pin Name

Frame

GND

GND

UOUT

VOUT

WOUT

Pin Voltage

LB1896

Equivalent Circuit Diagram

Pin Function

Frame GND.

GND must be shared.

GND

Output pins.

Motor connection

17 Rf

18, 24 NC

16 VCC2

4.3 to 6.5 V

15 Z1

14 Z2

Output Tr GND.

A resistor can be connected between this pin

and GND to sense the output current as a

voltage drop to provide for overcurrent

protection.

Idle pins.

v Power supply for blocks other than the

output block.

v This supply should be kept stable to

prevent ripple and noise from entering this

pin.

v First-stage amplifier gain setting resistors.

v Z1 and Z2 normally range from several

tens of kΩ to several hundreds of kΩ.

v The gain is about 6 dB.

13 VC

12

VCref

VCC2/2

±1.0

v VC is the speed control pin.

Forward when VC > VCref.

Reverse when VC < VCref.

v

VC is used to control the output voltage.

VCref determines the motor control stop

voltage.

VCC2/2 in normal use.

11 GC1

10 GC2

0 to VCC2

v Input/output gain switching pins.

v GC1 is for first-stage amplifier Z1/Z2

switching.

When GC1 is LOW, Z1 is selected;

when HIGH, Z2 is selected. GC2 is for

next-stage amplifier switching.

Continued on next page.

No.5225-4/8

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