LM3409QHV Datasheet PFET Buck Controller

Manufacturer: National Semiconductor (now Texas Instruments)

Download the LM3409QHV datasheet PDF. This datasheet also includes the LM3409Q variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

LM3409QHV pfet buck controller by National Semiconductor (now Texas Instruments) - Datasheet Preview — Note: The manufacturer provides a single datasheet file (LM3409Q_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	LM3409QHV
Manufacturer	National Semiconductor (now Texas Instruments)
File Size	0.98 MB
Description	PFET Buck Controller
Datasheet	LM3409QHV Datasheet

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

Overview

LM3409 / LM3409HV / LM3409Q / LM3409QHV PFET Buck Controller for High Power LED Drives LM3409 / LM3409HV LM3409Q / LM3409QHV PFET Buck Controller for High Power LED.

Key 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) 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.

📁 Similar Datasheet

Part Number	Description	Manufacturer
LM3409	P-FET Buck Controller	Texas Instruments
LM3409-Q1	P-FET Buck Controller	Texas Instruments
LM3409HV	P-FET Buck Controller	Texas Instruments
LM3409HV-Q1	P-FET Buck Controller	Texas Instruments

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number	Description
LM3409Q	PFET Buck Controller
LM3409	PFET Buck Controller
LM3409HV	PFET Buck Controller
LM340	3-Terminal Positive Regulators
LM3401	Quad Amplifiers
LM3402	0.5A Constant Current Buck Regulator
LM3402HV	0.5A Constant Current Buck Regulator
LM3403	Quad Operational Amplifiers
LM3404	1.0A Constant Current Buck Regulator
LM3405	1A Constant Current Buck Regulator