LM34910CSD National Semiconductor, LM34910CSD Datasheet - Page 10

• Manufacturer Part Number: LM34910CSD
• Description: High Voltage (50V, 1.25A) Step Down Switching Regulator
• Manufacturer: National Semiconductor

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operation, good use of the PC board’s ground plane can help
considerably to dissipate heat. The exposed pad on the bot-
tom of the IC package can be soldered to a ground plane, and
that plane should extend out from beneath the IC, and be
connected to ground plane on the board’s other side with
several vias, to help dissipate the heat. The exposed pad is
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internally connected to the IC substrate. Additionally the use
of wide PC board traces, where possible, can help conduct
heat away from the IC. Judicious positioning of the PC board
within the end product, along with the use of any available air
flow (forced or natural convection) can help reduce the junc-
tion temperatures.