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L6285 Fiches technique(PDF) 13 Page - STMicroelectronics

No de pièce L6285
Description  3 CHANNELS MULTIPOWER SYSTEM
PDF  16 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6285 Fiches technique(HTML) 13 Page - STMicroelectronics

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THERMAL CHARACTERISTICS
The cooling of the device is obtained by soldering
its ground pins on a proper p.c.b copper side ,
acting as a true heatsink. By considering four
squared side as in Fig.10, the junction to ambient
thermal resistance has been measured (see
Fig.11). The typical transient thermal resistance
versus values of single pulse width of power is
shown in Fig.12. In general these thermal charac-
teristics are very important to the designer to opti-
mize the L6285 applications.
Figure 10: Four ”on board” Square Heatsink
Figure 11: Typical Rth j-amb vs. lenght ”l” (Fig. 10)
Figure 12: Typical Transient Thermal Resistance
vs. Time or Pulse Width
L6285
13/16



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