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GENERAL OPERATING CHARACTERISTICS
The output current of the LM380 is rated at 1 3A peak The
14 pin dual-in-line package is rated at 35 C W when sol-
dered into a printed circuit board with 6 square inches of 2
ounce copper foil ( Figure 2 ) Since the device junction tem-
perature is limited to 150 C via the thermal shutdown circuit-
ry the package will support 3 watts dissipation at 50 C am-
bient or 3 7 watts at 25 C ambient
Figure 2 shows the maximum package dissipation versus
ambient temperature for various amounts of heat sinking
FIGURE 2 Device Dissipation vs Ambient Temperature
Figures 3a b and c show device dissipation versus output
power for various supply voltages and loads
FIGURE 3a Device Dissipation
vs Output Power
FIGURE 1
TL H 7380– 2
TL H 7380– 3
4X Load
2
TL H 7380– 1
FIGURE 3b Device Dissipation
vs Output Power
8X Load
FIGURE 3c Device Dissipation
vs Output Power
16X Load
TL H 7380 – 4
TL H 7380 – 5
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