TS39150CZ(RevA) Ver la hoja de datos (PDF) - TSC Corporation

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TS39150CZ
(Rev.:RevA)

1.5A Ultra Low Dropout Fixed Positive Voltage Regulator

TSC Corporation 

Application Information (continues)

Using the calculated values for TR(max) and PD, the

maximum allowable value for the junction to ambient

thermal resistance, θja, can now be found:

θja = TR(max) / PD

IMPORTANT: if the maximum allowable value for is

found to be ≥60 oC/W for the TO-220 package, ≥80

oC/W for the TO-263 package, no heatsink is needed

since the package alone will dissipate enough heat to

satisfy these requirements. If the calculated value for

θja falls below these limits, a heatsink is required.

TS39150

4-5

2005/3 rev. A

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