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Texas Instruments LM4663MTX — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

LM4663MTX Class D Audio Amplifier, 2.1W x 2 @ 4Ω, 24-TSSOP

MPNLM4663MTX
End of Life

Texas Instruments Boomer® series, Class D audio amplifier, 2-channel (stereo) with stereo headphones, 2.1W x 2 @ 4Ω, 4.5V-5.5V supply, -40°C to 85°C, 24-TSSOP package.

$0.96Ref. price · indicative, final on quote
LM4663MTX datasheet
Packaging24-TSSOP (0.173", 4.40mm Width)
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

LM4663MTX Technical Specifications
ParameterValue
TypeClass D
SeriesBoomer®
Output type2-Channel (Stereo) with Stereo Headphones
Mounting typeSurface Mount
Voltage4.5V ~ 5.5V
Max output power x channels @ load2.1W x 2 @ 4Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
Case24-TSSOP (0.173\", 4.40mm Width)

Product details

Class D stereo amplifier in a 24-TSSOP

The LM4663MTX is a Texas Instruments Boomer® series Class D audio amplifier with two output channels — one stereo speaker pair plus a separate stereo headphone path. Class D topology keeps quiescent losses low compared to a linear amp, which matters for battery-powered or thermally constrained enclosures. The 24-TSSOP package (4.40 mm body width) suits compact portable audio boards where board area is tight.

2.1 W per channel into 4 Ω — what that means for the load

Each speaker channel is rated for 2.1 W into a 4 Ω load.

Supply and temperature — operational boundaries

The part runs on a single 4.5 V to 5.5 V supply.

Frequently asked questions

What is the output power of LM4663MTX?

Each speaker channel delivers 2.1 W into a 4 Ω load. The headphone output is a separate path and is not rated at the same power level.

Can LM4663MTX be used with 8 ohm speakers?

Yes, but the output power will be lower than the 2.1 W into 4 Ω rating — expect roughly half the current at the same supply voltage, so about 1 W per channel into 8 Ω.

Is LM4663MTX RoHS compliant?

No, the part is marked RoHS non-compliant. The termination finish contains lead, so verify your assembly process and end-market requirements before specifying it.