Texas Instruments

LM3406MH/NOPB  

External/Internal LED Drivers

LM3406MH/NOPB Description

The LM3406MH/NOPB from Texas Instruments is a high-performance DC-DC regulator designed for driving LEDs in automotive and general lighting applications. This surface-mount device integrates an internal switch (1.5A output current) and operates over a wide input voltage range (6V to 42V), making it suitable for demanding environments. It supports PWM dimming (10kHz–1MHz) for precise brightness control and complies with ROHS3 and automotive-grade standards (AEC-Q100 qualified). Packaged in a 14-pin HTSSOP tube, it offers robust thermal performance and reliability.

LM3406MH/NOPB Features

• Integrated 1.5A MOSFET: Eliminates the need for an external switch, reducing BOM cost and board space.
• Wide Input Range (6V–42V): Compatible with 12V/24V automotive systems and industrial power supplies.
• PWM Dimming (10kHz–1MHz): Enables flicker-free dimming for high-quality lighting.
• High Efficiency (Up to 95%): Optimized for minimal power loss in LED driver applications.
• Automotive-Grade: Meets stringent reliability requirements for automotive lighting (e.g., headlights, DRLs).
• Thermal Protection & Undervoltage Lockout (UVLO): Enhances system durability.

LM3406MH/NOPB Applications

Ideal for:

• Automotive Lighting: Daytime running lights (DRLs), headlights, and interior lighting due to its AEC-Q100 compliance.
• Industrial LED Drivers: High-voltage industrial lighting systems requiring stable current regulation.
• Architectural & Display Lighting: PWM dimming ensures smooth brightness adjustment for signage and accent lighting.
• Portable Lighting: Battery-powered applications benefit from its wide input range and efficiency.

Conclusion of LM3406MH/NOPB

The LM3406MH/NOPB stands out for its integration, efficiency, and automotive readiness, offering a compact yet robust solution for LED driving. Its PWM dimming, wide voltage range, and thermal protections make it superior to discrete alternatives, particularly in space-constrained or harsh environments. Engineers designing automotive, industrial, or high-end lighting systems will find this regulator a reliable and cost-effective choice.

LM3406MH/NOPB Documents

Download datasheets and manufacturer documentation for LM3406MH/NOPB

Datasheets :

LM3406, LM3406HV(-Q1) Datasheet      

Reference Design Library :

LM3406MHEVAL: 350mA ~ 1.5A @ 18.9V (24V in), 6 ~ 42Vin      

Design Resources :

Lighting Product Selector       LM3406 Design with WEBENCH® Power Designer      

PCN Design/Specification :

Cu Wire 17/Jun/2016