LB1971V View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LB1971V Datasheet PDF : 9 Pages
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Pin Functions
Pin No. Symbol
2
UOUT
1
VOUT
23
WOUT
24
RF
3
STBY
LB1971V
Pin voltage
Function
• 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
• Standby control
Normal operation: High
Standby: Low or open
Equivalent circuit
VS
2 1 23
VCC1
24
30 kΩ
3
70 kΩ
VCC1
4
BRK
0 to VCC1
• Forward/reverse torque switching
Forward torque: Low or open
Reverse torque: High
330 Ω
4
50 kΩ
VCC1
5
VCC1
6
VS
7
VCC2
8
FG
2.0 V to 6.0 V
• Power supply connection
0 V to VCC2
2.0 V to 6.0 V
• Motor drive and speed control blocks
power supply
The voltage applied to this pin must be
strictly lower than VCC2.
• Power supply connection for the pre-
drive circuit and the motor back EMF
detection comparator circuit
• FG output
These are open collector output.
VCC1
8
Continued on next page.
No. 6214-7/9
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