LB11873 Datasheet, PDF (10/14 Pages) Sanyo Semicon Device – Monolithic Digital IC For Polygonal Mirror Motors Three-Phase Brushless Motor Driver

LB11873
Continued from preceding page.
Pin No.
Pin
Description
23
BRSEL Deceleration (braking) control selection
Low : 0V to 1.0V
High : 2.0V to VREG
This pin goes to the high level when open.
A low level selects reverse torque control and a
high level selects free running braking. If reverse
torque control is used, an external Schottky barrier
diode will be required on the low side of the output.
VREG
24
PH
RF waveform smooth
Connect a capacitor between this pin and ground.
VREG
Equivalent Circuit
20kΩ
5kΩ
23
30kΩ
500Ω
34
25
FCS
Control loop frequency characteristics correction
Connect a capacitor between this pin and ground.
VREG
300Ω
25
26
TM
Monitor output
This pin is normally left open.
VREG
300Ω
26
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