BA6418 Ver la hoja de datos (PDF) - ROHM Semiconductor

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BA6418

Reversible motor driver

ROHM Semiconductor 

Motor driver ICs

(9) ASO

Make sure that the output current and supply voltage do

not exceed the ASO values.

(10) Precautions for input mode switching

To ensure reliability, it is recommended that the mode

switching for the motor pass once through the open

mode.

(11) In-rush current

There are no circuits built into these ICs that prevent in-

rush currents. Therefore, it is recommended to place a

current limiting resistor or other physical countermea-

sure.

(12) Factors regarding the thermal, power supply, and

motor conditions

If the potential of the output pin sways greatly and goes

below the potential of ground, the operation of the IC may

malfunction or be adversely affected. In such a case,

place a diode between the output and ground, or other

measure, to prevent this.

(13) Minimum operating voltage applied between power

supply (pin 6) and COM (pin 8)

The minimum operating voltage applied between these

pins is 4V at an ambient temperature of 25_C, but the

voltage increases by 8mV (typical) for each degree be-

low 25_C. Keep in mind this negative temperature de-

pendence when setting the voltage at low ambient tem-

peratures.

(14) Thermal shutdown circuit

When the thermal shutdown circuit is activated at the IC

junction temperature of about 175_C (typical), all driver

outputs are turned OFF. There is a temperature differ-

ence of about 15_C (typical) between the temperatures

at which the circuit is activated and deactivated.

(15) To eliminate motor noise, connect a capacitor be-

tween OUT1 (pin 9) and GND and between OUT2 (pin 7)

and GND. Alternatively, connect a capacitor between

OUT1 and OUT2, and also a diode between OUT1 and

GND and between OUT2 and GND (see Fig. 4).

BA6418N

465

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