LM2940CS-12 National Semiconductor, LM2940CS-12 Datasheet - Page 15

• Manufacturer Part Number: LM2940CS-12
• Description: Linear Voltage Regulator IC
• Manufacturer: National Semiconductor

Specifications of LM2940CS-12

• No. Of Pins: 3
• Output Current: 1A
• Termination Type: SMD
• Mounting Type: Through Hole
• Voltage Regulator Type: LDO Linear
• Peak Reflow Compatible (260 C): No
• Current Rating: 1A
• Output Voltage Max: 12V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

HEATSINKING LLP PACKAGE PARTS
The value of θ
for the LLP package is specifically dependent
JA
on PCB trace area, trace material, and the number of layers
and thermal vias. It is recommended that a minimum of 6
thermal vias be placed under the center pad to improve ther-
mal performance.
For techniques for improving the thermal resistance and pow-
er dissipation for the LLP package, please refer to Application
Note AN-1187.
882241
FIGURE 6. Maximum Power Dissipation vs. T
for the
A
SOT-223 Package
15
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