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Texas Instruments LM4949TLX/NOPB — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

TI LM4949TLX/NOPB Class-D Audio Amp, 2.5W x 2 @ 4Ω

MPNLM4949TLX/NOPB
End of Life

Texas Instruments Boomer® LM4949TLX/NOPB Class-D audio amplifier, 2.5W x 2 @ 4Ω stereo speaker output plus 190mW x 2 @ 16Ω headphone drive, I²C volume control, 25-µSMD package, -40°C to 85°C.

$0.72Ref. price · indicative, final on quote
LM4949TLX/NOPB datasheet
Packaging25-WFBGA
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LM4949TLX/NOPB Technical Specifications
ParameterValue
TypeClass D
SeriesBoomer®
Output type2-Channel (Stereo) with Stereo Headphones
Mounting typeSurface Mount
Voltage2.7V ~ 5.5V
Max output power x channels @ load2.5W x 2 @ 4Ohm; 190mW x 2 @ 16Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
FeaturesDepop, Differential Inputs, I²C, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
Case25-WFBGA

Product details

I²C volume control and the BOM it saves

Volume, mute, and depop are all managed over the I²C bus — no separate potentiometer, no analog switch, no click-pop suppression RC network. The chip also packs short-circuit and thermal protection, so the output stage doesn't need an external crowbar or a polyfuse. For a two-speaker stereo design with a headphone jack, the LM4949TLX/NOPB replaces maybe five or six discretes.

Temperature grade and where it runs

Rated for -40°C to 85°C ambient, this part handles outdoor portable gear, dashcams, and industrial panel audio where the enclosure gets warm.

Frequently asked questions

What is the output power of LM4949TLX/NOPB?

The LM4949TLX/NOPB delivers 2.5W x 2 into a 4Ω speaker load and 190mW x 2 into a 16Ω headphone load.

Can LM4949TLX/NOPB replace TPA2012D2?

Both are 2-channel Class-D amps with I²C volume control in small packages, but the LM4949TLX/NOPB adds a dedicated headphone output channel and depop circuitry. Pin compatibility depends on the specific PCB layout — check the respective datasheets for the ball-map alignment.

Does LM4949TLX/NOPB require external components?

The LM4949TLX/NOPB integrates I²C volume control, depop, mute, short-circuit and thermal protection, so the external BOM is minimal — typically just input coupling caps, output filter caps, and supply bypassing. No external potentiometer or click-suppression network is needed.