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LM3842

ETC
Part Number LM3842
Manufacturer ETC
Description step-down constant current LED driver
Published Jun 11, 2013
Detailed Description LM3842 Features n n n n n n n n n n n n Efficiency up to 93% 180 μA(TYP.) Quiescent Current Output Current: Up to 1A Int...
Datasheet PDF File LM3842 PDF File

LM3842
LM3842

Overview
LM3842 Features n n n n n n n n n n n n Efficiency up to 93% 180 μA(TYP.
) Quiescent Current Output Current: Up to 1A Internal Synchronous Rectifier 1.
5MHz Switching Frequency Soft Start Under-Voltage Lockout Short LED Protection Open LED Protection Thermal Shutdown 5-pin Small SOT23-5 Packages Pb-Free Package General Description The LM3842 is a step-down constant current LED driver.
When the input voltage down to lower than LED forward voltage, then LM3842 run into LDO mode.
The LM3842 supports a range of input voltages from 2.
5V to 6.
0V, allowing the use of a single Li+/Li-polymer cell, 3AA or 4AA cell, USB, and other standard power sources.
The FB voltage is only 0.
1V to achieve high effi...


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