LB11870_07 SANYO [Sanyo Semicon Device], LB11870_07 Datasheet - Page 9

• Manufacturer Part Number: LB11870_07
• Description: For Polygonal Mirror Motors Three-Phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Continued from preceding page.
Pin No.
25
26
27
28
29
Symbol
FGFIL
CSD
FGS
CLD
LD
FG filter connection.
If noise on the FG signal input is a problem,
insert a capacitor (up to about 2200pF)
between this pin and ground.
Sets the rotor constraint protection circuit
operating time and the initial reset pulse.
A protection operating time of about 8 seconds
can be set by insert a capacitor of about
0.068μF between this pin and ground. If the
rotor constraint protection circuit is not used,
insert a resistor and a capacitor in parallel
between this pin and ground. (Values: about
220kΩ and 4700pF)
Sets the phase lock state signal mask time.
A mask time of about 90ms can be set by
inserting a capacitor of about 0.1μF between
this pin and ground.
Leave this pin open if masking is not required.
FG Schmitt output.
Phase lock state detection output.
This output goes to the on state (low level)
when the phase is locked.
Pin Description
LB11870
VREG
VREG
VREG
VREG
VREG
Equivalent Circuit
300Ω
Continued on next page.
25
300 Ω
27
28
29
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