LM340-12MDC National Semiconductor Corporation, LM340-12MDC Datasheet - Page 11

• Manufacturer Part Number: LM340-12MDC
• Manufacturer: National Semiconductor Corporation

Application Hints
Figures 6, 7 show the information for the SOT-223 package.
Figure 6 assumes a θ
51˚C/W for 2 ounce copper and a maximum junction tem-
perature of 125˚C.
Typical Applications
Note: Bypass capacitors are recommended for optimum stability and transient response, and should be located as close as possible to the regulator.
FIGURE 6. θ
for the SOT-223 Package
(J–A)
(J–A)
vs Copper (2 ounce) Area
of 74˚C/W for 1 ounce copper and
(Continued)
00778141
High Input Voltage Circuits
Fixed Output Regulator
11
Please see AN-1028 for power enhancement techniques to
be used with the SOT-223 package.
FIGURE 7. Maximum Power Dissipation vs
T
00778114
AMB
00778113
00778115
for the SOT-223 Package
00778142
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