M54544AL datasheet(4/4 Pages) MITSUBISHI

No de pièce	M54544AL

Description	Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION

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Fabricant	MITSUBISHI [Mitsubishi Electric Semiconductor]

Site Internet	http://www.mitsubishichips.com

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Bi-DIRECTIONAL MOTOR DRIVER

WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION

M54544AL

MITSUBISHI <CONTROL / DRIVER IC>

CAUTIONS

Since the thermal protection function of this IC may not work in

abnormal status (oscillation, low supply voltage, output short-

circuit, etc.), check the operation in the IC installation status when

using this function.

When the motor back electromotive force is large with the brakes

applied, for example, malfunction may occur in internal parasitic Di.

If flyback current of 1A or more flows, add Schottky Di to the

portion between the output and the GND.

When the IC is used at a high speed for PWM, etc., note that

switching of output results in delay of approx. 10

µs.

APPLICATION EXAMPLES

1) When VCC and VCC’ are used as the same power supply

2) When VCC is used as a fixed power supply and VCC’ is used as

a variable power supply

1

2

3

4

5

6

7

8

9

M54544AL

VB

R2=3

Ω

R1=2

Ω

C

10 – 100

µF

Input 2

Input 1

M

1

2

3

4

5

6

7

8

9

M54544AL

VCC

2

Ω

C

10 – 100

µF

Input 2

Input 1

M

C

1 – 10

µF

VCC’2

VCC’1

VCC1

VCC2

VCC’2

VCC2

VCC1

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