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Texas Instruments LM4890MX/NOPB — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

LM4890MX/NOPB TI Class AB Audio Amp, 1W Mono 8-SOIC

MPNLM4890MX/NOPB
End of Life

Texas Instruments Boomer® series, Class AB audio amplifier, 1-Channel (Mono), 1W x 1 @ 8Ohm, 8-SOIC (0.154", 3.90mm Width), 2.2V ~ 5.5V supply, -40°C ~ 85°C.

$1.68Ref. price · indicative, final on quote
LM4890MX/NOPB datasheet
Packaging8-SOIC (0.154", 3.90mm 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

LM4890MX/NOPB Technical Specifications
ParameterValue
TypeClass AB
SeriesBoomer®
Output type1-Channel (Mono)
Mounting typeSurface Mount
Voltage2.2V ~ 5.5V
Max output power x channels @ load1W x 1 @ 8Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesDepop, Shutdown, Thermal Protection
Case8-SOIC (0.154\", 3.90mm Width)

Product details

Built-in features for clean audio and reliability

The LM4890MX/NOPB: Depop circuitry suppresses the turn-on thump that otherwise sends a DC transient to the speaker. Shutdown mode cuts quiescent current for battery conservation. Thermal protection prevents die damage under sustained overload or high ambient temperature — useful when the amplifier is driving a speaker inside a sealed enclosure.

Package and mounting

The 8-SOIC package (3.90mm body width) is a standard surface-mount footprint. The /NOPB suffix confirms ROHS3 compliance, so it passes lead-free reflow profiles without issue. The tape-and-reel option (TR) suits automated pick-and-place; cut-tape (CT) is available for prototype or low-volume builds.

Sourcing and lifecycle

The LM4890MX/NOPB is listed as Active with no end-of-life notification. It remains a current-production part from Texas Instruments. For BOM planning, the part is sourced through independent distribution and quoted to order against an RFQ.

Frequently asked questions

What is the difference between LM4890MX/NOPB and LM4890M?

The LM4890MX/NOPB is the ROHS3-compliant variant of the LM4890M, sharing the same Class AB mono amplifier core, 1W output, and 8-SOIC package. The /NOPB suffix indicates lead-free construction, which is the standard for new designs.

Can LM4890MX/NOPB be used in 5V systems?

Yes, the supply range of 2.2V to 5.5V covers 5V rails directly, so it works in 5V-powered audio circuits without a regulator.

What is the pinout of LM4890MX/NOPB?

The LM4890MX/NOPB uses the standard 8-SOIC pinout for the Boomer® family: pins include shutdown, bypass, audio input, output, and supply/ground. The exact pin mapping is in the TI datasheet.