LB11922_08 Datasheet, PDF (9/15 Pages) Sanyo Semicon Device – For OA Products Three-Phase Brushless Motor Driver

LB11922
Continued from preceding page.
Pin No.
11
Pin name
INT OUT
Function
Integrating amplifier output (speed control).
VCC
Equivalent circuit
11
12
PWM
PWM oscillator frequency setting.
Connect a capacitor between this pin and
ground.
VCC
300Ω
12
13
CSD
Sets the operating time of the constrained-rotor
protection circuit.
Reference signal oscillator used when the
clock signal is cut off and to prevent
malfunctions.
The protection function operating time can be
set by connecting a capacitor between this pin
and ground.
This pin also functions as the logic circuit block
power-on reset pin.
15
XO
Oscillator circuit connections.
16
XI
XO : Output pin
XI : Input pin
A reference clock can be generated by
connecting an oscillator element to these pins.
If an external clock with a frequency of a few
MHz is used, input that signal through a series
resistor of about 5.1kΩ.
The XO pin must be left open in this case.
VCC ^{Reset circuit}
300Ω
13
VCC
15
16
18
FGOUT FG amplifier output.
This pin is connected to the FG Schmitt
comparator circuit internally in the IC.
VCC
18
FG Schmitt comparator
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