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LB11880 Datasheet(PDF) 8 Page - Sanyo Semicon Device |
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LB11880 Datasheet(HTML) 8 Page - Sanyo Semicon Device |
8 / 9 page No. 6470-8/9 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 Ω 3.9 Ω VCC 16 18 17 22 20 23 24 30 k Ω 30 k Ω 10 k Ω VCC 200 Ω 23 24 22 19 200 Ω 200 Ω 2 k Ω 16 17 18 10 k Ω 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 Ω VREG 5 µA 15 µA 15 µA 26 25 100 µA 300 Ω 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. |
Número de pieza similar - LB11880 |
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Descripción similar - LB11880 |
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