Continued from preceding page.
Pin No.
Symbol
Pin voltage
25
WIN
26
UIN
27
VIN
28
COM
29
WOUT
1
UOUT
2
VOUT
30
RF
LB1950V
Equivalent circuit
Function
Coil waveform detector comparator input
• Motor coil center tap input
• The LB1950V detects the coil voltage waveform taking
this voltage as the reference.
• W-phase coil output
• U-phase coil output
• V-phase coil output
• Output transistor ground
• The LB1950V implements fixed-current drive by
detecting the voltage on this pin.
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