LM3409Q - PFET Buck Controller

Product Overview

National Semiconductor

Part number	LM3409Q
Manufacturer	National Semiconductor
File Size	0.98 MB
Description	PFET Buck Controller
Datasheet	LM3409Q Datasheet
Additional preview pages of the LM3409Q datasheet.

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 |