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LB1854M Datasheet(PDF) 4 Page - Sanyo Semicon Device |
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LB1854M Datasheet(HTML) 4 Page - Sanyo Semicon Device |
4 / 6 page No. 4476-4/6 LB1854M Truth Table Input high: Phase 1 is 0.2 V or more higher than the corresponding phase 2 for each phase input. Low: Phase 1 is 0.2 V or more lower than the corresponding phase 2 for each phase input. Forward and reverse control high: 2.3 V to VCC1 Low: 0 V to 0.7 V Pin Functions Unit (resistance: Ω) Source Input Forward and reverse control Sink U V W F/RC 1 W phase → V phase H H L L V phase → W phase H 2 W phase → U phase H L L L U phase → W phase H 3 V phase → W phase L L H L W phase → V phase H 4 U phase → V phase L H L L V phase → U phase H 5 V phase → U phase H L H L U phase → V phase H 6 U phase → W phase L H H L W phase → U phase H Pin No. Symbol Pin voltage Equivalent circuit Function 1, 2, 14, 15, 16, 17, 29, 30 3 4 5 6 FRAME (GND) FC VC REF VC VCC1 1.5 V min VCC2 max 0 V min VCC2 max 5 to 18 V Ground for all circuits except the outputs The gain frequency characteristics can be lowered by connecting a capacitor between this pin and ground to prevent oscillation. Speed control The LB1854M implements a voltage control scheme in which the output voltage is controlled by the pin 5 voltage. The pin 4 voltage determines the control start voltage. Power supply that provides the drive outputs |
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