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Texas Instruments LM4936MHX/NOPB — Analog & Data Acquisition

LM4936MHX/NOPB Boomer® Class AB Audio Amp, 2.2W x 2 @ 3Ω

MPNLM4936MHX/NOPB
End of Life

Texas Instruments Boomer® series, LM4936MHX/NOPB, Class AB stereo audio power amplifier, 2.2W x 2 @ 3Ω speaker channels plus 110mW x 2 @ 32Ω headphone output, 2.7V–5.5V supply, industrial temp, 28-PowerTSSOP package.

$2.71Ref. price · indicative, final on quote
Texas Instruments LM4936MHX/NOPB datasheet (PDF)
Packaging28-PowerTSSOP (0.173", 4.40mm Width)
SeriesBoomer®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM4936MHX/NOPB specifications
ParameterValue
TypeClass AB
SeriesBoomer®
Output type2-Channel (Stereo) with Stereo Headphones
MountingSurface Mount
Supply voltage2.7V ~ 5.5V
Max output power x channels @ load2.2W x 2 @ 3Ohm; 110mW x 2 @ 32Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
FeaturesBass Boost, Depop, I²C, Mute, Shutdown, SPI, Thermal Protection, Volume Control
Case28-PowerTSSOP (0.173\", 4.40mm Width)

Product details

Output power split — speaker vs headphone

The 2.2W x 2 @ 3Ω rating is the speaker channel; the 110mW x 2 @ 32Ω is the headphone output. That headphone figure is typical for a Class AB stage — enough for consumer earbuds or monitoring cans, but not for high-impedance studio headphones. If your BOM needs both outputs, this part saves a separate headphone amp IC and the associated PCB area.

Feature set drives the BOM decision

Integrated I²C and SPI control lets the host processor set volume, mute, and bass boost digitally — no external potentiometers. The depop circuit suppresses turn-on/turn-off clicks, and thermal protection shuts down the output stage before the die overheats. For a portable design, these features reduce external passives and simplify the audio subsystem qualification.

Frequently asked questions

Is LM4936MHX/NOPB RoHS compliant?

Yes, the /NOPB suffix indicates lead-free and RoHS-compliant. No additional exemption declarations needed for standard RoHS markets.

Does LM4936MHX/NOPB require an external heatsink?

No separate heatsink is needed if the PCB provides a proper thermal pad under the exposed pad of the 28-HTSSOP package. A copper plane with thermal vias is required to keep the junction within the -40°C to 85°C operating range.

How does LM4936MHX/NOPB compare to TPA2012D2?

The TPA2012D2 is a Class-D amplifier with higher efficiency (up to 85%) and delivers 2.1W per channel into 4Ω from a 5V supply, but it lacks the headphone output and the integrated I²C/SPI volume control of the LM4936MHX/NOPB. The LM4936MHX/NOPB is a Class AB part — lower efficiency but simpler EMI compliance and no output filter. Choose the TPA2012D2 for battery life; choose the LM4936MHX/NOPB for a combined speaker + headphone solution with digital control.