LP3320 datasheet(7/9 Pages) POWER

7 / 9 page

LP3320-00

Jan.-2018

Email: marketing@lowpowersemi.com

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Page 7 of 9

Preliminary Datasheet

LP3320

Layout Consideration

For best performance of the LP3320, the following

guidelines must be strictly followed.

※

Input and Output capacitors should be placed

close to the IC and connected to ground plane to

reduce noise coupling.

※

The GND and Exposed Pad should be

connected to a strong ground plane for heat

sinking and noise protection.

※

Keep the main current traces as possible as

short and wide.

※

LX node of DC-DC converter is with high

frequency voltage swing. It should be kept at a

small area.

※

Place the feedback components as close as

possible to the IC and keep away from the noisy

devices.

Thermal Considerations

For continuous operation, do not exceed absolute

maximum operation junction temperature. The

maximum power dissipation depends on the thermal

resistance of IC package, PCB layout, the rate of

surroundings airflow and temperature difference

between junction to ambient.

The maximum power dissipation can be calculated

by following formula:

PD(MAX) = ( TJ(MAX) - TA ) / qJA

Where TJ(MAX) is the maximum operation junction

temperature. TA is the ambient temperature and the

qJA is the junction to ambient thermal resistance.

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