LB1971V datasheet(7/9 Pages) SANYO

부품명	LB1971V

상세설명	Three-Phase Full-Wave Sensorless CD and MD Players Spindle Motor Driver

PDF	9 Pages

Scroll/Zoom	100%

제조업체	SANYO [Sanyo Semicon Device]

홈페이지	https://www.sanyo-av.com/us/

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7 / 9 page

No. 6214-7/9

LB1971V

Pin Functions

Pin No.

Symbol

Pin voltage

Function

Equivalent circuit

UOUT

VOUT

WOUT

VCC1

1 23

Continued on next page.

• U, V, and W phases coil outputs

• Rf connection

The LB1971V implements current control

using a resistor (Rf) connected between

this pin and ground to detect the drive

current.

0 to VCC1

STBY

VCC1

30 k

Ω

70 k

Ω

• Standby control

Normal operation: High

Standby: Low or open

0 to VCC1

BRK

VCC1

330

Ω

50 k

Ω

• Forward/reverse torque switching

Forward torque: Low or open

Reverse torque: High

2.0 V to 6.0 V

VCC1

• Power supply connection

• FG output

These are open collector output.

VCC1

• Motor drive and speed control blocks

power supply

The voltage applied to this pin must be

strictly lower than VCC2.

0 V to VCC2

VCC2

2.0 V to 6.0 V

• Power supply connection for the pre-

drive circuit and the motor back EMF

detection comparator circuit

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