STK672-442B-E

No.A1735-4/24

Derating Curve of Motor Current, IOH, vs. STK672-442B-E Operating Substrate Temperature, Tc

Notes

• The current range given above represents conditions when output voltage is not in the avalanche state.

• If the output voltage is in the avalanche state, see the allowable avalanche energy for STK672-4** series hybrid ICs

given in a separate document.

• The operating substrate temperature, Tc, given above is measured while the motor is operating.

Because Tc varies depending on the ambient temperature, Ta, the value of IOH, and the continuous or intermittent

operation of IOH, always verify this value using an actual set.

• The Tc temperature should be checked in the center of the metal surface of the product package.

4.0

3.0

3.5

0.5

0

080

20

40

60

100

70

10

30

50

90

110

ITF02574

2.0

2.5

1.5

1.0

IOH - Tc

Operating Substrate Temperature, Tc-

°C

200Hz 2 phase excitation

Hold mode