LM3434SQX/NOPB

Description：IC LED DRIVER CTRLR PWM 24WQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)

SKU:42617136223c Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC LED DRIVER CTRLR PWM 24WQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)
Type：DC DC Controller
Topology：Step-Down (Buck)
Internal Switch(s)：No
Number of Outputs：1
Voltage - Supply (Min)：3V
Voltage - Supply (Max)：5.8V
Voltage - Output：-
Current - Output / Channel：-
Frequency：1MHz
Dimming：PWM
Applications：-
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：24-WFQFN Exposed Pad
Supplier Device Package：24-WQFN (4x4)
Grade：-
Qualification：-

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LM3434SQX/NOPB

Overview

The LM3434SQX/NOPB is a Texas Instruments LED driver IC featuring an adaptive constant on-time DC/DC controller with step-down (buck) topology. It supports PWM dimming and operates at a switching frequency of 1MHz. The device is housed in a 24-WQFN (4x4) surface-mount package. Maximum supply voltage is rated at 5.8V, with an operating temperature range spanning from -40°C to 125°C TJ.

Feature Summary

Adaptive constant on-time control architecture for stable operation
Integrated step-down (buck) DC/DC controller functionality
Supports Pulse Width Modulation (PWM) dimming capabilities

Applications

Industrial applications
Aerospace industry applications
Medical applications

Procurement Notes

Verify the specific suffix 'X' indicates tape and reel packaging configuration. Confirm that the SQ designation aligns with automotive or qualified reliability standards required for the target deployment environment. Ensure the 24-WQFN footprint matches the PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a buck topology is required for high-frequency LED driving. The 1MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the input voltage does not exceed the 5.8V maximum rating and that thermal management accommodates the 125°C junction temperature limit.

Part Context

This part belongs to the LM3434 series of LED drivers manufactured by Texas Instruments. It shares functional similarities with other members like the LM3434SQ/NOPB but differs in packaging and reel specifications. The series utilizes adaptive constant on-time control for efficient power management in lighting systems.