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LB1981V Datasheet(PDF) 6 Page - Sanyo Semicon Device

Part # LB1981V
Description  Three-Phase Brushless Motor Driver
PDF  9 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1981V Datasheet(HTML) 6 Page - Sanyo Semicon Device

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LB1981V
No. 5917-6/9
Pin number
18
19
20
22
21
Pin name
PGOUT
Pin voltage
Equivalent circuit
Pin function
FG amplifier output pin.
Pin for connecting triangular
wave oscillator capacitor.
Serves for forced startup
waveform generation.
Frequency characteristics pin.
Connecting a capacitor
between this pin and ground
serves to prevent closed-loop
oscillation in the current
control circuitry.
(Lower-side output transistor
drive current)
Frequency characteristics pin.
Connecting a capacitor
between this pin and ground
serves to prevent closed-loop
oscillation in the current
control circuitry.
(Lower-side output transistor
drive current)
Connecting a capacitor
between this pin and ground
activates the coil output
saturation prevention function.
In this condition, the VS pin is
controlled for motor voltage
control.
By adjusting the external
capacitor, torque ripple
compensation can be varied.
Continued from preceding page
OSC
FC1
FC2
FILTER
Continued on next page
18
VCC1
30
µA
30k
Ω
A10867
19
VCC1
5
µA
2.5
µA10µA
1k
Ω
A10868
20
VCC1
2k
Ω
2k
Ω
5k
Ω
10k
Ω
2s
A10869
22
VCC1
10k
Ω
FC2
A10870
21
2
VCC1
1k
Ω
30k
Ω
1k
Ω
1
1k
Ω
29
1k
Ω
25
µA
A10871



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