TS39100 TSC [Taiwan Semiconductor Company, Ltd], TS39100 Datasheet - Page 8

• Manufacturer Part Number: TS39100
• Description: 1.0A Ultra Low Dropout Positive Voltage Regulator
• Manufacturer: TSC [Taiwan Semiconductor Company, Ltd]

TS39100/1/2/3
Application Information (continues)
Thermal resistance consists of two main elements, Θjc
(junction to case) and Θca (case to ambient). Using the
power
resistance, Θja (junction to ambient) is the limiting
factor in calculating the maximum power dissipation
capability of the device. Typically, the power SOP-8
have a Θjc of 20
lower than the standard SOP-8 which is typically
75
soldered directly to a ground plane which significantly
reduces the case to sink and sink to ambient thermal
resistance.
Power Dissipation
From under curves, the minimum area of copper
necessary for the par to operate safely can be
determined. The maximum allowable temperature rise
must be calculated to determine operation along
which curve.
o
C/W. Θca is reduced because pin 5~8 can be
SOP-8
o
reduces
C/W dramatically , this is significantly
Θca,
the
total
8-10
thermal
2004/06 rev. E