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LB11880 Datasheet(PDF) 8 Page - Sanyo Semicon Device

No. de pieza LB11880
Descripción Electrónicos  Three-Phase Sensorless Motor Driver with Loading Motor Driver
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Fabricante Electrónico  SANYO [Sanyo Semicon Device]
Página de inicio  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB11880 Datasheet(HTML) 8 Page - Sanyo Semicon Device

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LB11880
Continued from preceding page.
Pin No.
Pin
Pin voltage
Function
Equivalent circuit
Drum motor driver output
Lowest potential of the drum motor driver output
transistor
This IC implements constant-current control by
detecting this voltage.
The current limiter also operates by detecting this
voltage.
16
UOUT
20
µA
3.9
3.9
VCC
16
18
17
22
20
23
24
30 k
30 k
10 k
VCC
200
23
24
22
19
200
200
2 k
16 17 18
10 k
17
VOUT
18
WOUT
20
RF
Internal reference voltage and power supply for
both the drum motor driver output block and the
coil waveform detection circuit.
21
VCC
8 to 13.8 V
Motor coil center input
The coil voltage waveform is detected with this
voltage as the reference.
19
MCOM
1/2VREG
-VF
1 k
VREG
5
µA
15
µA
15
µA
26
25
100
µA
300
VREG
27
Triangular wave generating capacitor connection
This triangular wave is used to implement soft
switching in the coil output waveform.
The value of the capacitor connected between this
pin and ground determines the operating frequency
range and the minimum operating frequency of the
VCO circuit.
25
C1
26
C2
27
CX
Coil waveform detection comparator input
Each phase output is connected by an internal
10 k
Ω resistor.
22
UIN
23
VIN
24
WIN
Continued on next page.


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