LM3431QMHX/NOPB

$2.01

Description：IC LED DRIVER CTRLR PWM 28HTSSOP
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)

SKU:25736162b2b8 Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC LED DRIVER CTRLR PWM 28HTSSOP
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)
Type：DC DC Controller
Topology：Step-Up (Boost)
Internal Switch(s)：No
Number of Outputs：3
Voltage - Supply (Min)：4.5V
Voltage - Supply (Max)：36V
Voltage - Output：-
Current - Output / Channel：-
Frequency：1MHz
Dimming：Analog, PWM
Applications：Backlight
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：28-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package：28-HTSSOP
Grade：Automotive
Qualification：AEC-Q100

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LM3431QMHX/NOPB

Overview

The LM3431QMHX/NOPB is a three-channel constant current LED driver IC manufactured by Texas Instruments. It operates within an extended temperature range of -40°C to +125°C and utilizes an HTSSOP-28 surface-mount package. The device supports analog and PWM dimming methods for precise light control. Key integrated features include adjustable switching frequency, enable/shutdown functionality, soft start capability, and thermal shutdown protection. This component is designed for robust automotive lighting applications requiring reliable multi-channel regulation.

Feature Summary

Provides independent constant current regulation across three dedicated output channels.
Supports both analog and pulse-width modulation (PWM) dimming techniques for flexible brightness control.
Integrates comprehensive protection mechanisms including thermal shutdown and soft start sequencing.

Applications

Automotive exterior lighting systems
High-intensity discharge lamp ballasts
LED headlight modules

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm exact packaging and qualification status. Ensure the ordering part number matches the required AEC-Q100 automotive grade specifications if intended for vehicle integration. Cross-reference the datasheet revision history to validate compatibility with existing design parameters before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring three independently controlled LED channels with high reliability standards. Consider the HTSSOP-28 package constraints for thermal management and board space limitations. Evaluate the need for PWM versus analog dimming capabilities based on system control architecture requirements.

Part Context

This device belongs to the LM3431 series of LED lighting drivers from Texas Instruments. It is engineered for demanding environments where consistent current regulation and durability are critical. The QMHX designation indicates a specific automotive-grade variant optimized for mass production in electronic control units.