LB11921T Datasheet, PDF (8/18 Pages) Sanyo Semicon Device – Monolithic Digital IC Three-Phase Brushless Motor Driver

LB11921T
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Pin No.
Symbol
Pin Description
5
FGS
FG schmitt comparator circuit output
This is an open collector output.
VCC
Equivalent Circuit
5
6
LD
Speed lock detection output
VCC
Goes low when the motor speed is within the
speed lock range (±6.25%).
6
7
DOUT
Speed discriminator output
Acceleration → high, deceleration → low
VCC
8
POUT
Speed control system PLL output
Outputs the phase comparison result for CLK and
VCC
FG.
7
8
9
INT REF Integrating amplifier non-inverting input
(1/2 VCC potential)
10
INT IN
Integrating amplifier inverting input
VCC
500Ω
9
500Ω
10
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