LP3999

SNVS207E – JUNE 2003 – REVISED MAY 2013

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Referring to the section Surface Mount Assembly Considerations, it should be noted that the pad style which

must be used with the 5 pin package is NSMD (non-solder mask defined) type.

For best results during assembly, alignment ordinals on the PC board may be used to facilitate placement of the

DSBGA device.

DSBGA LIGHT SENSITIVITY

Exposing the DSBGA device to direct sunlight will cause incorrect operation of the device. Light sources such as

halogen lamps can affect electrical performance if they are situated in proximity to the device.

Light with wavelengths in the red and infra-red part of the spectrum have the most detrimental effect thus the

fluorescent lighting used inside most buildings has very little effect on performance. Tests carried out on a

DSBGA test board showed a negligible effect on the regulated output voltage when brought within 1 cm of a

fluorescent lamp. A deviation of less than 0.1% from nominal output voltage was observed.

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