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Texas Instruments LM4940TS/NOPB — Analog & Data Acquisition

LM4940TS/NOPB Class AB Stereo Amp, 6W x 2 @ 4Ω, TO-263-9

MPNLM4940TS/NOPB
End of Life

Texas Instruments Boomer® series, Class AB, 2-Channel (Stereo) audio amplifier, 6W x 2 @ 4Ohm, 10V ~ 16V supply, -40°C ~ 85°C, Surface Mount, DDPAK/TO-263-9 package.

$4.15Ref. price · indicative, final on quote
Texas Instruments LM4940TS/NOPB datasheet (PDF)
PackagingTO-263-10 (9 Leads + Tab)
RoHSROHS3 Compliant
SeriesBoomer®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM4940TS/NOPB specifications
ParameterValue
TypeClass AB
SeriesBoomer®
Output type2-Channel (Stereo)
MountingSurface Mount
Supply voltage10V ~ 16V
Max output power x channels @ load6W x 2 @ 4Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FeaturesDepop, Short-Circuit and Thermal Protection, Shutdown
CaseTO-263-10 (9 Leads + Tab)

Product details

The LM4940TS/NOPB is a Class AB stereo audio amplifier from TI's Boomer® series, delivering 6W per channel into a 4Ω load. It's built for surface-mount assembly in the DDPAK/TO-263-9 package — a 9-lead tabbed package that sinks heat through the PCB copper. The 10V to 16V supply range keeps it on a standard 12V or 15V audio rail. Industrial temperature rating (-40°C to 85°C) means it can sit in outdoor paging systems, automotive aftermarket head units, or factory-floor audio zones without derating.

6W x 2 into 4Ω is the continuous sine-wave output per channel before clipping. Protection features include short-circuit and thermal shutdown. The Depop feature suppresses the power-on thump.

Frequently asked questions

What is the maximum output power per channel?

The LM4940TS/NOPB delivers 6W per channel into a 4Ω load, stereo (2-channel). That's the continuous sine-wave rating before clipping.