SN79xxx
◈ Absolute Maximum Ratings ( Ta = 25℃ )
Limits
Parameter
Symbol
Unit
TO-220F-3L
TO-252-3L
-40.0 ( VO=24V )
Input Voltage
VIN
V
-35.0 ( VO=5 to 18V )
Power Dissipation
Thermal Resistance Junction to Case
Thermal Resistance Junction to Air
Junction Temperature
Pd
RΘJC
RΘJA
TJ
2.0
5
1.3
5
W
°C/W
°C/W
°C
65
92
150
Operate Temperature Range
Storage Temperature Range
Topr
Tstg
-40 ~ +125
-55 ~ +150
°C
°C
Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical
specifications do not apply when operating the device outside of its operating ratings. The maximum
allowable power dissipation is a function of the maximum junction temperature, TJ(max)
,
the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA.
The maximum allowable power dissipation at any ambient temperature is calculated using:
PD(max) = (TJ(max) – TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in
excessive die temperature, and the regulator will go into thermal shutdown.
3
KSD-I0O011-002
Jan. 2011 REV. 02