lb1674v Sanyo Semiconductor Corporation, lb1674v Datasheet - Page 4

• Manufacturer Part Number: lb1674v
• Description: Brushless, Sensorless Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Pin Description
Number
Pin
23
22
24
10
1
3
2
4
5
6
7
8
9
COM*
START
Name
GND
OSC
Vref
Vsp
DW
Pin
DU
DR
DV
W
U
V
Equivalent Circuit
Unit (resistance:
LB1674V
)
c Motor coil connection pins
c Power transistor base pins
c Power and signal ground
c Starting pulse period set pin
c Start-up waveform detection circuit offset set pin
c Drive direction switch pin (normally low)
c Reference voltage pin (0.5 V)
c Start/stop control pin.
c Speed signal (motor induction voltage) detector
Active-high
Description
Continued on next page.
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