The LM4861MX/NOPB: The 1.5W into 8Ω rating is the headline figure — it tells you the amplifier can drive a small speaker to reasonable volume without clipping. At lower supply voltages (say 3V) the output power drops, but the part still delivers useful audio for voice prompts or alert tones. The 2V minimum supply means it can run from a nearly depleted battery, extending runtime in portable gear. Shutdown and thermal protection are built in: the shutdown pin lets a microcontroller put the amp into a low-power idle, and the thermal protection prevents die damage if the speaker is shorted or the ambient temperature spikes. The 8-SOIC package is a standard footprint; no board respin needed if you're replacing an older 8-pin audio amp.
LM4861MX/NOPB
Texas Instruments · Boomer® Series
Texas Instruments Boomer® series, Class AB audio amplifier, mono 1.5W output into 8Ω, 2V to 5.5V supply, 8-SOIC package, -40°C to 85°C operating temperature.
LM4861MX-NOPB
[IN STOCK] In Stock: 809 pcs
MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T
Technical specifications
| Parameter / Attribute | Specification / Value |
|---|---|
| Type | Class AB |
| Series | Boomer® |
| Output type | 1-Channel (Mono) |
| Mounting | Surface Mount |
| Supply voltage | 2V ~ 5.5V |
| Max output power x channels @ load | 1.5W x 1 @ 8Ohm |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Features | Shutdown, Thermal Protection |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
Technical details
LM4861MX/NOPB
[ALLOC] verified