lb1989 Sanyo Semiconductor Corporation, lb1989 Datasheet - Page 7

• Manufacturer Part Number: lb1989
• Description: Three-phase Sensorless Vcr Drum Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
Pin No.
22
19
20
21
18
PGOUT1
PGOUT2
PGIN+
PGIN–
BFGO
Pin
Pin voltage
Equivalent circuit
LB1989
Motor back EMF detection FG output
(synthesized from 3 phases)
PG Schmitt amplifier output
PG amplifier negative (–) input
PG amplifier positive (+) input
This pin is biased internally by 1/2 VREG.
PG amplifier linear output
Function
Continued on next page.
No. 6210-7/9