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Texas Instruments LM4809MM/NOPB — Analog & Data Acquisition

LM4809MM/NOPB TI Boomer Class AB Stereo Headphone Amp, 105mW

MPNLM4809MM/NOPB
End of Life

Texas Instruments Boomer series, LM4809MM/NOPB, Class AB stereo headphone amplifier, 105mW x 2 into 16Ω, 2V-5.5V supply, 8-VSSOP package, -40°C to 85°C operating temperature.

$1.69Ref. price · indicative, final on quote
Texas Instruments LM4809MM/NOPB datasheet (PDF)
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
SeriesBoomer®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM4809MM/NOPB specifications
ParameterValue
TypeClass AB
SeriesBoomer®
Output typeHeadphones, 2-Channel (Stereo)
MountingSurface Mount
Supply voltage2V ~ 5.5V
Max output power x channels @ load105mW x 2 @ 16Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesDepop, Shutdown, Thermal Protection
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)

Product details

Stereo headphone driver for portable audio

The Texas Instruments LM4809MM/NOPB is a Class AB stereo headphone amplifier from the Boomer series, delivering 105 mW per channel into a 16 Ω load.

Built-in protection and shutdown

The LM4809MM/NOPB includes depop circuitry to suppress turn-on/turn-off clicks, a shutdown pin for power saving, and thermal protection. The depop feature is worth noting — it saves an external mute circuit and avoids the pop that otherwise hits the headphones when the amplifier powers up. Shutdown drops quiescent current to microamps, extending battery standby time.

Frequently asked questions

What is the output power of LM4809MM/NOPB?

The LM4809MM/NOPB delivers 105 mW per channel into a 16 Ω load, stereo (2-channel).

What is the difference between LM4809MM and LM4809MM/NOPB?

The /NOPB suffix indicates a lead-free (Pb-free) and ROHS3-compliant finish. The base LM4809MM is the same die with a different plating option; the /NOPB variant is the one to specify for ROHS-driven BOMs.