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LB1843V Scheda tecnica(PDF) 4 Page - Sanyo Semicon Device |
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LB1843V Scheda tecnica(HTML) 4 Page - Sanyo Semicon Device |
4 / 6 page Truth Table Input Output Mode IN1 IN2 OUT1 OUT2 L L off off Standby HLHL Forward LHLH Reverse H H L L Brake Output Current Limitation and Detector Output DEL OUT output RD H Limit L Non-limit Off L Saturated Off Sample Application Timing Chart Sample application timing chart 1 Connect a DC motor (R L =RΩ) between OUT1 and OUT2, and with the RD pin pulled up, input a forward rotation signal (IN1 = high, IN2 = low). Because the output is used in the saturated state at startup, set the DEL input to low. 2 The DC motor starts up, and the startup current (I ST =VM/R) flows to the motor. 3 The DC motor rotates in the normal state. At this point, set the DEL input to high. 4 If the DC motor locks, the motor current I M increases to the point of Ilimit (= VLIR/(10Rf)), the output current limiter operates to limit the output current. At the same time, RD is output low from the set current detection circuit. LB1843V No.4385-4/6 |
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