SN7818D 查看數據表（PDF） - Kodenshi Auk Co., LTD
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SN7818D Datasheet PDF : 18 Pages
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SN78xxx
◈ Absolute Maximum Ratings ( Ta = 25℃ )
Parameter
Symbol
Input Voltage
VIN
Power Dissipation
Pd
Thermal Resistance Junction to Case
RΘJC
Thermal Resistance Junction to Air
RΘJA
Junction Temperature
TJ
Operate Temperature Range
Topr
Storage Temperature Range
Tstg
Limits
TO-220F-3L TO-252-3L
40.0 ( VO=24V )
35.0 ( VO=5 to 18V )
2.0
1.3
5
5
65
92
150
-40 ~ +125
-55 ~ +150
Unit
V
W
°C/W
°C/W
°C
°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.
KSD-I0O008-004
3
Jan. 2010 REV. 04
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