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LM3409HVMY/NOPB

TILM3409HVMY/NOPB

Texas Instruments
LED Driver IC 1 Output DC DC Controller Step-Down (Buck) Analog, PWM Dimming 10-HVSSOP
NRND28,651 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The LM3409HVMY/NOPB is a high-side P-channel MOSFET controller designed for step-down (buck) LED driving applications. It supports a wide input voltage range from 6V to 75V and utilizes a constant off-time control architecture to maintain precise average LED current.

Why Choose This Part

The device features a differential current sense voltage of 200mV, which reduces power dissipation in the sense resistor. Its wide 75V input range simplifies design by eliminating the need for pre-regulation in many high-voltage systems, while supporting both analog and PWM dimming for versatile brightness control.

Applications

High-Power LED Driver
Driving high-brightness LED strings in industrial lighting systems requiring high input voltage rails.
Automotive Lighting
Suitable for vehicle headlamps and daytime running lights that must withstand load dump conditions up to 75V.
Constant Current Source
Providing stable current for battery charging or electroplating applications that need an adjustable current limit.

Key Specifications

Type DC DC Controller
Dimming Analog, PWM
Topology Step-Down (Buck)
Mounting Type Surface Mount
Package / Case 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
Number of Outputs 1
Internal Switch(s) No
Operating Temperature -40degC ~ 125degC (TJ)
Voltage - Supply (Max) 75V
Voltage - Supply (Min) 6V
Supplier Device Package 10-HVSSOP

Getting Started

Designers should use the LM3409HVEVAL evaluation board to test the buck topology and constant off-time control. During PCB layout, keep the power loops small and ensure the 10-HVSSOP package thermal pad is properly soldered to a large copper plane for heat dissipation.

LM3409 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Voltage - Supply (Max) Stock
LM3409HVMY/NOPB (this part) 75V 28,651
LM3409MY/NOPB 42V 16,197
LM3409HVMYX/NOPB 75V 16,759

Categories

Power Management > Switching Regulators Displays & Optoelectronics > LED Drivers Consumer Electronics > LED & Lighting Control