LM3409QHV, LM3409Q - PFET Buck Controller

National Semiconductor

Datasheet Details

Part number	LM3409QHV, LM3409Q
Manufacturer	National Semiconductor
File Size	0.98 MB
Description	PFET Buck Controller
Datasheet	LM3409Q_NationalSemiconductor.pdf
Note	This datasheet PDF includes multiple part numbers: LM3409QHV, LM3409Q. Please refer to the document for exact specifications by model.

The LM3409/09HV are P-channel MosFET (PFET) controllers for step-down (buck) current regulators.

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) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown.

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Published: Nov 7, 2010 |