LM4781TA Texas Instruments Integrated Circuit (Other) In Stock

Name: LM4781TA
Brand: Texas Instruments
SKU: LM4781TA
Availability: InStock

Texas Instruments LM4781TA is a 3-channel 35 W audio power amplifier IC with 20 kHz bandwidth, supporting stereo and surround sound configurations, available in a 27-pin ZIP package for home audio systems.

OBSOLETEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LM4781TAOther

Quick Facts

Manufacturer: Texas Instruments
Package: Other
Pin Count: 3
Lifecycle: OBSOLETE
Datasheet: LM4781TA Datasheet PDF
Category: Integrated Circuit
Temp Range: -20.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LM4781TA?

3-channel audio power amplifier delivering 35 W nominal output power per channel for stereo and center-channel surround sound designs
20 kHz audio bandwidth with low distortion provides full-range audio fidelity across the audible frequency spectrum
27-pin ZIP through-hole package with integrated heat spreader simplifies thermal management in high-power audio amplifier assemblies

What is LM4781TA used for?

The LM4781TA is designed for home theater receivers, mini-component audio systems, and multimedia speakers requiring three independent 35 W audio channels in a single IC. Its integrated 3-channel architecture reduces board complexity compared to discrete multi-amplifier solutions, making it suitable for cost-effective consumer audio products.

What are the specifications of LM4781TA?

Pbfree Code	No
YTEOL	0
Bandwidth-Nom	20kHz
Consumer IC Type	AUDIO AMPLIFIER
JESD-30 Code	R-PZIP-T27
JESD-609 Code	e0
Number of Channels	3
Number of Functions	1
Output Power-Nom	35W
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	ZIP27,.16,.16,40
Package Shape	RECTANGULAR
Package Style	FLANGE MOUNT
Qualification Status	Not Qualified
Supply Current-Max	150mA
Supply Voltage-Max (Vsup)	70V
Supply Voltage-Min (Vsup)	20V
Surface Mount	NO
Temperature Grade	OTHER
Terminal Finish	TIN LEAD
Terminal Form	THROUGH-HOLE
Terminal Pitch	1mm
Terminal Position	ZIG-ZAG
Package	Other

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.33.00.01

Where can I find the LM4781TA datasheet?

LM4781TA Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for LM4781TA?

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

Frequently Asked Questions

How many audio channels does the LM4781TA support, and what is the per-channel output power?

The LM4781TA integrates 3 independent audio amplifier channels, each delivering a nominal output power of 35 W. This makes it practical for 2.1 stereo systems or left/center/right front-stage audio in home theater receivers without requiring separate power amplifier ICs.

What audio bandwidth does the LM4781TA cover for hi-fi sound reproduction?

The LM4781TA provides a nominal bandwidth of 20 kHz, covering the full audible frequency range from bass through treble. This flat frequency response ensures accurate reproduction of music and movie soundtracks across all 3 amplifier channels in consumer audio equipment.

How does the LM4781TA ZIP package simplify thermal design in high-power audio systems?

The LM4781TA is housed in a 27-pin ZIP (zigzag in-line package) with an integrated metal heat-spreading tab that attaches directly to an external heatsink. This simplifies thermal management for a 35 W per channel design without requiring additional thermal interface hardware between the IC and heatsink.

In which consumer audio products is the LM4781TA commonly used?

The LM4781TA is used in home theater amplifiers, mini-shelf audio systems, powered multimedia speakers, and car audio head units requiring 3 channels of 35 W audio output. Its single-chip integration replaces 3 discrete power amplifier stages, reducing component count and simplifying PCB layout.

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

LM4781TA Texas Instruments Integrated Circuit (Other) In Stock

What are the key features of LM4781TA?

What is LM4781TA used for?

What are the specifications of LM4781TA?

Compliance & Regulatory

Where can I find the LM4781TA datasheet?

What are equivalent replacements for LM4781TA?

Frequently Asked Questions

How many audio channels does the LM4781TA support, and what is the per-channel output power?

What audio bandwidth does the LM4781TA cover for hi-fi sound reproduction?

How does the LM4781TA ZIP package simplify thermal design in high-power audio systems?

In which consumer audio products is the LM4781TA commonly used?

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