LM3208 datasheet(5/17 Pages) NSC

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Note 6: Junction-to-ambient thermal resistance (

θJA) is taken from thermal measurements, performed under the conditions and guidelines set forth in the JEDEC

standard JESD51-7. A 4 layer, 4" x 4", 2/1/1/2 oz. Cu board as per JEDEC standards is used for the measurements.

Note 7: Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm. Due

to the pulsed nature of the testing TA =TJ for the electrical characteristics table.

Note 8: The parameters in the electrical characteristics table are tested under open loop conditions at PVIN =VDD = 3.6V unless otherwise specified. For

performance over the input voltage range and closed-loop results, refer to the datasheet curves.

Note 9: Shutdown current includes leakage current of PFET.

Note 10: IQ specified here is when the part is not switching. For operating quiescent current at no load, refer to datasheet curves.

Note 11: Current limit is built-in, fixed, and not adjustable. Electrical Characteristic table reflects open loop data (FB = 0V and current drawn from SW pin ramped

up until cycle by cycle limit is activated). Refer to System Characteristics table for maximum output current.

Note 12: Ripple voltage should be measured at COUT electrode on a well-designed PC board and using the suggested inductor and capacitors.

Note 13: National Semiconductor recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper ESD handling

procedures can result in damage.

Note 14: Linearity limits are ±3% or ±50mV whichever is larger.

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