STK672-442B-E Ver la hoja de datos (PDF) - ON Semiconductor

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Fabricante

STK672-442B-E

2-phase Stepping Motor Driver

ON Semiconductor 

STK672-442B-E

6. Mitigated Curve of Package Power Loss, PdPK, vs. Ambient Temperature, Ta

Package power loss, PdPK, refers to the average internal power loss, PdAV, allowable without a heat sink.

The figure below represents the allowable power loss, PdPK, vs. fluctuations in the ambient temperature, Ta.

Power loss of up to 2.8W is allowable at Ta=25°C, and of up to 1.5W at Ta=60°C.

* The package thermal resistance θc-a is 28.6°C/W.

Allowable power dissipation, PdPK (no heat sink) - Ambient temperature, Ta

PdPK - Ta

3.0

2.5

2.0

1.0

1.5

0.5

0

0

20

40

60

80

100

120

Ambient Temperature, Ta - °C

ITF02718

No.A1735-23/26

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