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LM3409Q

Part Number	LM3409Q
Manufacturer	National Semiconductor
Description	PFET Buck Controller
Published	Nov 7, 2010
Detailed Description	LM3409 / LM3409HV / LM3409Q / LM3409QHV PFET Buck Controller for High Power LED Drives LM3409 / LM3409HV LM3409Q / LM34...
Datasheet	LM3409Q PDF File

Overview

LM3409 / LM3409HV / LM3409Q / LM3409QHV PFET Buck Controller for High Power LED Drives LM3409 / LM3409HV LM3409Q / LM3409QHV PFET Buck Controller for High Power LED Drives General Description The LM3409/09HV are P-channel MosFET (PFET) controllers for step-down (buck) current regulators.
They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage, fast output enable/disable function and a thermally enhanced eMSOP-10 package.
These features combine to make the LM3409/09HV ideal for use as constant current sources for driving LEDs where forward currents up to 5A are easily achievable.
The LM3409/09Q/09HV/09QHV uses Constant Off-Time (COFT) c...

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