LP3995

SNVS179F – FEBRUARY 2003 – REVISED SEPTEMBER 2015

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11.3 DSBGA Mounting

The DSBGA package requires specific mounting techniques that are detailed in TI's AN-1112 Application Report

(SNVA009). 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.

11.4 DSBGA Light Sensitivity

Exposing the DSBGA device to direct sunlight may cause mis-operation of the device. Light sources such as

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

The wavelengths that have the most detrimental effect are reds and infra-reds, which means that the fluorescent

lighting used inside most buildings has 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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