LB11921T Datasheet, PDF (7/18 Pages) Sanyo Semicon Device – Monolithic Digital IC Three-Phase Brushless Motor Driver

Pin Functions
Pin No.
1
Symbol
S/S
LB11921T
Pin Description
Start/stop control
VCC
Low: 0V to 1.0V
High: 2.0V to VCC
Goes high when left open.
Low for start.
The hysteresis is about 0.22V
Equivalent Circuit
3.5kΩ
1
2
CLK
External clock signal input
Low: 0V to 1.0V
VCC
High: 2.0V to VCC
Goes high when left open.
The hysteresis is about 0.22V.
f = 2.34kHz, maximum
3.5kΩ
2
3
F/R
Forward/reverse control
Low: 0V to 1.0V
VCC
High: 2.0V to VCC
Goes high when left open.
Low for forward.
The hysteresis is about 0.22V.
4
BR
Brake pin (short braking operation)
Low: 0V to 1.0V
VCC
High: 2.0V to VCC
Goes high when left open.
High or open for brake mode operation.
The hysteresis is about 0.22V.
3.5kΩ
3
3.5kΩ
4
Continued on next page.
No.A0604-7/18