P

D +

T

MAX

–T

A

q

JA

Where:

= Maximum power dissipation of THS3001 (watts)

= Free-ambient air temperature (

°C)

1

0

−20

20

1.5

0.5

0

40

100

−40

60

80

SOIC-D Package:

No Airflow

THS3001

THERMAL INFORMATION

The THS3001 incorporates output-current-limiting protection. Should the output become shorted to ground, the

output current is automatically limited to the value given in the data sheet. While this protects the output against

excessive current, the device internal power dissipation increases due to the high current and large voltage drop

across the output transistors. Continuous output shorts are not recommended and could damage the device.

the device is possible under this condition and should be avoided. But, the THS3001 does not incorporate

thermal-shutdown protection. Because of this, special attention must be paid to the device's power dissipation or

failure may result.

The thermal coefficient

maximum power dissipation, shown in Figure 55, is calculated by the following formula:

Figure 55. Maximum Power Dissipation vs Free-Air Temperature

24

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