LM3404MR - Texas Instruments

Manufacturer Part Number

LM3404MR

Manufacturer

Texas Instruments

Introduction

The LM3404MR is a step-down (buck) DC DC regulator specially designed for LED driving applications within a voltage supply range of 6V to 42V.

Product Features and Performance

Integrated DC DC buck (step-down) regulator

Internal switching transistor

Output voltage up to 40V

Maximum output current of 1A

Operational frequency of 1MHz

Pulse Width Modulation (PWM) dimming capability

Operates effectively from -40°C to 125°C

Automotive grade product

Surface mount package type

Product Advantages

High integration reduces external component requirements.

Wide input voltage range accommodates various power supplies.

High efficiency achieved through the use of an integrated switch.

PWM dimming feature allows flexible brightness control.

Resilient to harsh automotive operating environments due to temperature grade.

Key Technical Parameters

Voltage Supply (Min): 6V

Voltage Supply (Max): 42V

Voltage Output: 40V

Current Output / Channel: 1A

Frequency: 1MHz

Quality and Safety Features

Built-in over-current protection

Over-temperature shut-down mechanism

Compatibility

Suitable for driving single or multiple LEDs in series within specified limits

Compatible with automotive lighting system voltage requirements

Application Areas

Automotive lighting

General LED lighting applications

Product Lifecycle

Discontinued at Digi-Key

Alternative models or newer revisions recommended for new designs

Several Key Reasons to Choose This Product

Reliable performance under extensive automotive temperature ranges.

High-switching frequency minimizes size of external components.

Easy integration due to surface mount package and internal switch.

Capability to drive various LED configurations with stable output.

Proven track record in the automotive industry.