LM7818CT Просмотр технического описания (PDF) - International Cmos Technology

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LM7818CT

3-Terminal Positive Regulators

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Application Hints (Continued)

00778140

FIGURE 5. Maximum Power Dissipation vs

TAMB for the TO-263 Package

Figures 6, 7 show the information for the SOT-223 package.

Figure 6 assumes a θ(J–A) of 74˚C/W for 1 ounce copper and

51˚C/W for 2 ounce copper and a maximum junction tem-

perature of 125˚C.

00778141

FIGURE 6. θ(J–A) vs Copper (2 ounce) Area

for the SOT-223 Package

Typical Applications

Please see AN-1028 for power enhancement t0e07c7h81n42iques to

be used with the SOT-223 package.

FIGURE 7. Maximum Power Dissipation vs

TAMB for the SOT-223 Package

Fixed Output Regulator

00778113

Note: Bypass capacitors are recommended for optimum stability and transient response, and should be located as close as possible to the regulator.

High Input Voltage Circuits

00778114

11

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