LM3433SQ Texas Instruments Integrated Circuit (Other) In Stock

Name: LM3433SQ
Brand: Texas Instruments
SKU: LM3433SQ
Availability: InStock

LM3433SQ is a high brightness LED driver IC from Texas Instruments with current-mode PWM control, supporting adjustable input voltage from 3V to 5.8V. It features pulse width modulation for precise LED current regulation. Ideal for LCD backlighting and general solid-state lighting applications.

OBSOLETEIntegrated CircuitVerified Apr 2026

Package / Visual Reference

LM3433SQOther

Quick Facts

Manufacturer: Texas Instruments
Package: Other
Pin Count: 25
Lifecycle: OBSOLETE
Datasheet: LM3433SQ Datasheet PDF
Category: Integrated Circuit
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LM3433SQ?

Current-mode PWM control for precise and stable LED current regulation
Adjustable input voltage range from 3V to 5.8V for flexible power supply design
24-pin WQFN package for compact PCB footprint
Supports high brightness LED arrays for LCD backlighting and general lighting
Integrated switching controller reduces external component count

What is LM3433SQ used for?

The LM3433SQ is widely used in LCD panel backlighting systems for monitors, notebooks, and TVs where stable, high-brightness LED driving is required. It also serves general solid-state lighting applications such as architectural and industrial luminaires. Its adjustable input voltage range makes it suitable for battery-powered portable devices and low-voltage DC systems.

What are the specifications of LM3433SQ?

YTEOL	0
Additional Feature	ADJUSTABLE INPUT VOLTAGE RANGE FROM 0 TO 5.8V
Analog IC - Other Type	SWITCHING CONTROLLER
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	5.8V
Input Voltage-Min	3V
Input Voltage-Nom	3.3V
JESD-30 Code	S-XQCC-N24
JESD-609 Code	e0
Number of Functions	1
Package Body Material	UNSPECIFIED
Package Shape	SQUARE
Package Style	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel)	260
Surface Mount	YES
Switcher Configuration	PUSH-PULL
Switching Frequency-Max	1000kHz
Temperature Grade	AUTOMOTIVE
Terminal Finish	Tin/Lead (Sn85Pb15)
Terminal Form	NO LEAD
Terminal Pitch	0.5mm
Terminal Position	QUAD
Time@Peak Reflow Temperature-Max (s)	40
Package	Other

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.60

Where can I find the LM3433SQ datasheet?

LM3433SQ Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for LM3433SQ?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the input voltage range of the LM3433SQ?

The LM3433SQ supports an adjustable input voltage range from 3V to 5.8V, with a nominal operating voltage of 3.3V. This makes it compatible with standard low-voltage power rails commonly used in portable and embedded systems.

What control technique does the LM3433SQ use for LED current regulation?

The LM3433SQ uses current-mode pulse width modulation (PWM) control to regulate LED current. This technique provides fast transient response and inherent cycle-by-cycle current limiting, ensuring consistent brightness and protection against overcurrent conditions.

What package type is the LM3433SQ available in?

The LM3433SQ is available in a 24-pin WQFN (Very Thin Quad Flat No-Lead) package, as indicated by the JESD-30 code S-XQCC-N24. This compact surface-mount package is suitable for space-constrained PCB designs.

What are the typical applications for the LM3433SQ?

The LM3433SQ is typically used in LCD backlighting for monitors, laptops, and televisions, as well as general high-brightness LED lighting systems. Its current-mode switching controller architecture makes it well suited for both portable consumer electronics and industrial lighting applications.

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.

Aug 6, 2026

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.

Aug 6, 2026

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.

Aug 4, 2026

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.

Aug 4, 2026

Why Buy from FindMyChip

Authorized Source

Verified supply chain with full traceability & inspection

Competitive Pricing

Factory-direct from China distributors, low MOQ

Fast Shipping

DHL Express 3–5 days · FedEx/UPS 5–7 days worldwide

Quality Guaranteed

30-day replacement for defective parts, no questions asked

About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

View all Texas Instruments parts →

More from Texas Instruments

SN74HC138PWT

Small Outline Packages

Integrated Circuit

MCP6292IDGKT

Small Outline Packages

Integrated Circuit

CD4511BMN

Dual-In-Line Packages

Integrated Circuit

UCC2803DG4

Small Outline Packages

Integrated Circuit

MC33078DRE4

Small Outline Packages

Integrated Circuit

TLV6710DDCT

SOT23 (6-Pin)

Integrated Circuit

AvailabilityIn Stock

Reference Price (USD)

Contact for Price

Buy from 1pc · Factory-direct pricing

pcs

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”

Rajesh Patel

Procurement Manager, VoltEdge Energy, India

LM3433SQ Texas Instruments Integrated Circuit (Other) In Stock

What are the key features of LM3433SQ?

What is LM3433SQ used for?

What are the specifications of LM3433SQ?

Compliance & Regulatory

Where can I find the LM3433SQ datasheet?

What are equivalent replacements for LM3433SQ?

Frequently Asked Questions

What is the input voltage range of the LM3433SQ?

What control technique does the LM3433SQ use for LED current regulation?

What package type is the LM3433SQ available in?

What are the typical applications for the LM3433SQ?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

You May Also Like