STK672-740A-E 查看數據表（PDF） - ON Semiconductor

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STK672-740A-E

Thick-Film Hybrid IC 2-phase Stepping Motor Driver

ON Semiconductor 

STK672-740A-E

[Smoke Emission Precuations]

If Pin 18 (S.G terminal) is attached to the PCB without using solder, overcurrent may flow into the MOSFET at

VCCON (24V ON), causing the STK672-740A-E to emit smoke because 5V circuits cannot be controlled.

In addition, as long as one of the output Pins, 1, 3, 5, or 7, is open, inductance energy stored in the motor results in

electrical stress on the driver, possibly resulting in the emission of smoke.

Input Pin Functions

Pin Name

φA

φAB

φB

φBB

RESETB

ENABLE

Pin No.

13

17

12

10

14

15

Function

Pin 5, phase A output

Pin 7, phase AB output

Pin 3, phase B output

Pin 1, phase BB output

System reset

A, AB, B, and, BB outputs cut off

Input Conditions When Operating

Low active (with a function to prevent simultaneous

ON of φA and φAB, or φB and φBB)

A reset is applied by a low level

A, AB, B, and BB outputs are cut off by a low level

Output Pin Functions

Pin Name

Pin No.

Function

FAULT

16

Monitor pin used when over-current detection or overheat

detection function is activated.

Note: See the timing chart for the concrete details on circuit operation.

Input Conditions When Operating

Low level is output when detected.

No. A1136-6/19

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