LB1843V datasheet(4/6 Pages) SANYO

Il numero della parte	LB1843V

Spiegazioni elettronici	Low-saturation, current-controlled bidirectional motor driver

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Produttore elettronici	SANYO [Sanyo Semicon Device]

Homepage	https://www.sanyo-av.com/us/

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Truth Table

Input

Output

Mode

IN1

IN2

OUT1

OUT2

L

off

Standby

HLHL

Forward

LHLH

Reverse

H

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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