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33981B Datasheet(PDF) 30 Page - Freescale Semiconductor, Inc

Part # 33981B
Description  Single High-Side Switch (4.0 m??, PWM clock up to 60kHz
PDF  37 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

33981B Datasheet(HTML) 30 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
30
Freescale Semiconductor
33981
TYPICAL APPLICATIONS
POWER DISSIPATION
cycle of 95%. This value is far from the 150ºC maximum
guaranteed junction.
Figure 43. Junction Temperature vs. Duty Cycle
CONCLUSION
Knowing the application conditions, this document
explained how to calculate power dissipation during on-state
and switching phases and the junction temperature for the
33981 when controlling a DC motor. A concrete example with
a 200 W DC motor was given in section DC Motor 200 W. The
same principle can be used for other DC motor and other
environmental conditions.
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