BA6238AE2(2011) Просмотр технического описания (PDF) - ROHM Semiconductor

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BA6238AE2
(Rev.:2011)

1.0A or More Reversible Motor Drivers (2 Motors)

ROHM Semiconductor 

BA6247FP-Y,BA6238A

Technical Note

3) Control input conditions

The input threshold voltage has a positive temperature coefficient and is expressed by:

ΔVIH

ΔT

= +2.8mV / ℃

ΔVIL

ΔT

= +1.6mV / ℃

The input pin is pulled up at about 15kΩ.

Set input voltage with care not to exceed the maximum input voltage (internal voltage regulator).

BA6247FP-Y ··· 6V

BA6238A ··· 5V

4) Switching of rotating direction (FWD/REV)

When the rotating direction is changed over by the motor rotating condition, switch the direction after the motor is

temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditions as

follows:

via BRAKE: Longer than braking time*.

(* the time required for the output L terminal to achieve potential below GND when brake is activated.)

The motor in no drive might be influenced momentarily because the all driver outputs low at the brake.

●Interfaces

15k

IN1

IN2

IN3

5k

7k

VREG

Fig. 15 IN1, IN2, IN3

VCC2

VCC1

VCC2

VCC1

OUT1

OUT2

OUT3

OUT1

OUT2

OUT3

VR

GND

(BA6247FP-Y)

VR

GND

(BA6238A)

Fig.16 VCC1, VCC2, OUT1, OUT2, OUT3, VR, GND

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© 2011 ROHM Co., Ltd. All rights reserved.

8/11

2011.05 - Rev.B

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