M54670 데이터 시트보기 (PDF) - Mitsumi

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M54670

2-PHASE STEPPER MOTOR DRIVER

Mitsumi 

PRECAUTIONS FOR USE

(1) When the whole output current changes by a large margin (for

example, when thermal shutdown operation causes intermittent

flow of output current), the supply voltage may undergo a

change. Therefore, selection and wiring of power supply should

be conducted cautiously to avoid such a situation that the

supply voltage exceeds the absolute maximum ratings.

(2) When the supply voltage changes by a large margin, the

operation of this IC may become unstable. In this case, the

change of supply voltage can be controlled by connecting a

capacitor between Vcc pin and GND pin.

(3) Thermal shutdown function

The state of thermal shutdown operation may differ according to

the way of wiring within a board. Therefore, sufficient board

evaluation should be conducted before use. When the board is

changed, operation on the replacing board should be evaluated.

The circuit board on which this IC is mounted is designed to

realize low impedance between power supply and output pin.

Therefore, it is desirable to take a safe measure such as fixing a

fuse to avoid such a situation that the board is damaged by a

fire when output pin is internally short-circuited by excessively

applied surge voltage by accident.

MITSUBISHI <CONTROL / DRIVER IC>

M54670P

2-PHASE STEPPER MOTOR DRIVER

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