LM3557 datasheet(6/11 Pages) NSC

номер детали	LM3557

подробное описание детали	Step-Up Converter for White LED Applications

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производитель	NSC [National Semiconductor (TI)]

домашняя страница	http://www.national.com

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Typical Performance Characteristics ( Circuit in Figure 1: L = DO1608C-223, D = SS16, and LED =

LWT67C. Efficiency:

η =P

OUT/PIN = [(VOUT –VFb)*IOUT]/[VIN *IIN]. TA= 25˚C, unless otherwise stated). (Continued)

En PIN CURRENT vs En PIN VOLTAGE

CURRENT LIMIT vs TEMPERATURE

20131608

20131609

OVP PIN CURRENT vs TEMPERATURE

R

DS(ON) (Figure 2: N1) vs TEMPERATURE

20131610

20131611

R

Sw2(Figure 2: N2) vs TEMPERATURE

ENABLE THRESHOLD vs TEMPERATURE

20131612

20131613

Application Information

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