National Semiconductor LM3886T/NOPB

Mfr. Part

LM3886T/NOPB

Manufacturer

Luminary Micro/Texas Instruments

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Detailed Description

High-performance monolithic Class AB audio power amplifier from TI’s Overture series. Delivers up to 68 W into a 4 Ω load (single channel, mono) with wide supply range and built-in protection. Intended for through-hole designs using a TO-220-11 package with formed leads. Optimized for hi‑fi audio with low noise and low distortion. Ideal when you want simple external circuitry and robust protection in a proven, upgrade-friendly analog architecture.

Key Features

Output power: up to 68 W x 1 channel at 4 Ω (mono)

Supply range: single 20 V to 84 V or split ±10 V to ±42 V

Architecture: Class AB, Overture series

Protection: mute control, short-circuit protection, thermal shutdown, SPiKe-style safe-operating-area protection

Operating temperature: −20°C to +85°C (TA)

Package: TO-220-11, formed leads, through-hole

Mounting: requires heatsink for high-power use

Output type: 1-channel (mono)

Extras: stable, simple external component count, high PSRR, pop-and-click reduction via mute pin

Key Advantages

Strong, clean sound with low distortion suited for hi‑fi and pro audio

Wide voltage range makes it flexible across many PSU designs

Built-in protections improve system reliability and reduce field failures

Through-hole package and formed leads simplify prototyping and service

Proven “workhorse” audio amp with large ecosystem of designs, guides, and community support

Packaging

Type: Through-hole, TO-220-11 with formed leads

Material: Molded epoxy body with copper leadframe; exposed metal tab (non-insulated)

Size: Standard TO-220 body and hole spacing for common heatsinks; refer to datasheet mechanical drawing for exact dimensions

Pin configuration: 11 leads including input, feedback/inverting input, mute, V+, V−, output, bootstrap, grounds; see datasheet for full pinout and functions

Lead finish: NOPB (RoHS-compliant, lead-free)

Thermal characteristics: Low junction-to-case thermal resistance suitable for heatsinking; metal tab is typically connected to V− and must be isolated from chassis if needed (use mica/silicone pad and thermal compound as required)

Electrical properties summary: 1-channel Class AB power stage, operates from single or split supplies, designed for gains typically ≥10 (verify recommended minimum gain in datasheet), requires proper supply decoupling and output network for stability

Shipment: Bulk

Lifecycle

Status: Active and widely used in new and legacy designs

Not nearing discontinuation according to current industry status

Equivalent or alternative models:

- LM3886TF/NOPB (TI): Electrically similar, insulated tab version for easier heatsink isolation

- LM3876 (TI): Lower power sibling in Overture family

- LM2876 (TI): Mid‑power alternative

- LM4780 (TI): Dual LM3886 in one package (stereo/bridged options)

- LM1875 (TI): Lower power, simpler 20 W class AB option

- TDA7294 (ST): Popular class AB alternative with comparable power range

- Class D alternatives for higher efficiency: TPA3116D2, TPA3251, TPA3255 (different architecture and sound character)

If you need pin-to-pin or form-fit-function guidance, contact our sales team via the Y-IC website for tailored recommendations

Key Application Areas

Hi‑fi power amplifiers and integrated amplifiers

Active bookshelf speakers and studio monitors

Subwoofers and center-channel amps

Guitar/bass combo amps and pedalboard power stages

Home theater and soundbar boost stages

DIY audio and education platforms

Public address and installed sound systems

Datasheet

Y-IC hosts the most authoritative datasheet for LM3886T/NOPB on our product page. Download it now for complete electrical characteristics, pin descriptions, thermal data, PCB guidelines, and mechanical drawings.

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