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LB1971V Datasheet(PDF) 7 Page - Sanyo Semicon Device

Part # LB1971V
Description  Three-Phase Full-Wave Sensorless CD and MD Players Spindle Motor Driver
PDF  9 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1971V Datasheet(HTML) 7 Page - Sanyo Semicon Device

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No. 6214-7/9
LB1971V
Pin Functions
Pin No.
Symbol
Pin voltage
Function
Equivalent circuit
2
1
23
UOUT
VOUT
WOUT
VCC1
24
2
1 23
VS
Continued on next page.
• U, V, and W phases coil outputs
24
RF
• 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
3
STBY
VCC1
30 k
Ω
3
70 k
Ω
• Standby control
Normal operation: High
Standby: Low or open
0 to VCC1
4
BRK
VCC1
330
Ω
4
50 k
Ω
• Forward/reverse torque switching
Forward torque: Low or open
Reverse torque: High
2.0 V to 6.0 V
5
VCC1
• Power supply connection
6
8
VS
FG
• FG output
These are open collector output.
VCC1
8
• Motor drive and speed control blocks
power supply
The voltage applied to this pin must be
strictly lower than VCC2.
0 V to VCC2
7
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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