LM3421Q1MHX/NOPB

$1.63

Description：IC LED DRIVER CTRLR PWM 16HTSSOP
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Bulk

SKU:46477b4982cc Category: LED Drivers IC Brand: Texas Instruments

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：IC LED DRIVER CTRLR PWM 16HTSSOP
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Bulk
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：3V ~ 72V
Current - Output / Channel：-
Frequency：2MHz
Dimming：Analog, PWM
Applications：-
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：16-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package：16-HTSSOP
Grade：Automotive
Qualification：AEC-Q100

Download product information

LM3421Q1MHX/NOPB

Overview

The LM3421Q1MHX/NOPB is an N-channel controller for constant current LED drivers, designed for automotive applications. It supports boost, buck, and SEPIC topologies with a single output capable of up to 5 A. The device operates from a supply voltage range of 4.5 V to 75 V, delivering outputs between 3 V and 72 V. Switching frequency is adjustable from 100 kHz to 2 MHz. It functions within a temperature range of -40°C to +125°C and features analog and PWM dimming capabilities.

Feature Summary

Supports multiple converter topologies including boost, buck, and SEPIC for flexible LED driver design.
Enables precise constant current regulation with integrated thermal shutdown protection.
Provides flexible dimming control through both analog and pulse-width modulation inputs.

Applications

Automotive exterior lighting systems
LED headlamp modules
High-power LED illumination circuits

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure the component meets AEC-Q100 qualification requirements for the intended automotive environment. Cross-reference the datasheet revision date to validate parameter accuracy before integration into production designs.

Selection Notes

Select this component when designing high-voltage LED drivers requiring robust automotive-grade reliability. It is suitable for applications needing wide input voltage ranges and support for various inductive topologies. Consider the HTSSOP-16 package constraints and thermal management requirements for high-current operations exceeding standard limits.

Part Context

This part belongs to the LM3421 series of LED lighting drivers. It serves as a specialized controller for managing N-channel MOSFETs in power stages. The Q1 designation indicates automotive qualification, distinguishing it from standard industrial variants while maintaining core functional compatibility within the family.