LM3429Q1MHX/NOPB

$3.08

Description：IC LED DRIVER CTRLR PWM 14HTSSOP
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:58a889cc26a0 Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC LED DRIVER CTRLR PWM 14HTSSOP
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Type：DC DC Controller
Topology：SEPIC, Step-Down (Buck), Step-Up (Boost)
Internal Switch(s)：No
Number of Outputs：1
Voltage - Supply (Min)：4.5V
Voltage - Supply (Max)：75V
Voltage - Output：-
Current - Output / Channel：-
Frequency：2MHz
Dimming：Analog, PWM
Applications：-
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：14-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package：14-HTSSOP
Grade：Automotive
Qualification：AEC-Q100

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LM3429Q1MHX/NOPB

Overview

The LM3429Q1MHX/NOPB is an automotive-grade N-channel MOSFET controller designed for constant current LED drivers. It supports buck, boost, buck-boost, and SEPIC topologies with a VIN range of 4.5 V to 75 V. The device features adjustable switching frequency from 100 kHz to 2 MHz and delivers up to 5 A output current. Operating temperature ranges from -40°C to +125°C. It includes analog and PWM dimming capabilities, thermal shutdown, and enable/shutdown functions in a HTSSOP-14 package.

Feature Summary

Supports multiple LED driver topologies including buck, boost, buck-boost, and SEPIC configurations
Enables precise current regulation through analog and PWM dimming interfaces
Integrates thermal shutdown protection and enable/shutdown control logic

Applications

Automotive exterior lighting systems
High-voltage LED headlamp modules
Industrial LED illumination arrays

Procurement Notes

Verify the complete part number including suffixes such as NOPB and X to ensure correct packaging and automotive qualification status. Confirm that the specific variant matches the required topology and voltage range for the target application. Cross-reference the datasheet revision date to ensure compatibility with design specifications.

Selection Notes

Select this component when high input voltage operation up to 75 V is required for LED driving applications. Ensure the chosen topology aligns with the system architecture, as the controller supports both step-down and step-up configurations. Verify that the operating temperature range meets the environmental conditions of the intended installation site.

Part Context

This part belongs to the LM3429 family of N-channel controllers specifically qualified for automotive use. It shares functional similarities with non-automotive variants but includes enhanced reliability features and stricter manufacturing controls. The Q1 designation indicates compliance with automotive quality standards.