STK672-210-E

No. 7464-10/10

Figure 3 Allowable Loss Range, PAVL-IOH During STK672-210-E Avalanche Operations

Note:

The operating conditions given above represent a loss when driving a 2-phase stepping motor with constant current

chopping.

Because it is possible to apply 2W or more at IOH=0A, be sure to avoid using the MOSFET body diode that is used to

drive the motor as a zener diode.

[Smoke Emission Precuations]

If any of the output pins 2, 3, 4, and 5 is held open, the electrical stress onto the driver due to the inductive energy

accumulated in the motor could cause short-circuit followed by permanent damage to the internal MOSFET.

As a result, the STK672-210-E may give rise to emit smoke.

PS

This catalog provides information as of July, 2008. Specifications and information herein are subject

to change without notice.

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0

0.2

0.4

0.6

1.6

1.0

1.2

1.4

0.8

0.5

0

PAVL - IOH

ITF02618

2.5

2.0

1.5

1.0

Motor phase current, IOH - A