LM3557 series datasheets. Manufacturer: National Semiconductor.

LM3557SD-2 2.7 V to 7.5 V, step-up converter for white LED application in 8-pin LLP package. Operational temperature range from -40°C to 125°C. Datasheet*) LM3557SDX-2 2.7 V to 7.5 V, step-up converter for white LED application in 8-pin LLP package. Operational temperature range from -40°C to 125°C. Datasheet*) LM3557 Step-Up Converter for White LED Applications Datasheet*)

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