LM4863LQ/NOPB Texas Instruments Integrated Circuit (Other) In Stock
The LM4863LQ/NOPB is a dual-channel audio power amplifier from Texas Instruments delivering 2.7 W per channel with a 20 kHz bandwidth and 98 dB signal-to-noise ratio. It operates from a single supply for bridge-tied load or stereo single-ended speaker configurations, housed in a 24-pin QFN package. Designed for portable consumer electronics requiring compact, high-quality stereo amplification.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- LM4863LQ/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7500(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2.7 W per channel output power in a bridge-tied load configuration drives speakers directly from a 5 V single supply without output coupling capacitors
- 98 dB signal-to-noise ratio across 20 kHz audio bandwidth delivers high-fidelity stereo audio performance in consumer portable devices
- Dual-channel integration with shutdown mode reduces BOM count and enables power-saving operation when audio output is not required
Applications
The LM4863LQ/NOPB is designed for stereo audio amplification in portable devices such as tablets, laptops, Bluetooth speakers, and docking stations where a compact, single-supply amplifier is needed to drive 4 Ω or 8 Ω speakers at up to 2.7 W per channel. Its bridge-tied load topology eliminates output blocking capacitors, reducing component count and PCB area in space-constrained consumer electronics. The device is also suitable for set-top boxes, smart displays, and small home appliances where low-noise 20 kHz-bandwidth audio output is required from a 5 V USB or adapter supply.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| JESD-30 Code | R-XQCC-N24 |
| JESD-609 Code | e3 |
| Noise Figure-Nom | 98dB |
| Number of Channels | 2 |
| Number of Functions | 1 |
| Output Power-Nom | 2.7W |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC24,.16X.2,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 20mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output power does the LM4863LQ/NOPB deliver per channel and at what supply voltage?
The LM4863LQ/NOPB delivers a nominal output power of 2.7 W per channel into a 4 Ω bridge-tied load speaker when powered from a 5 V single supply. This power level is sufficient to drive a small bookshelf or laptop speaker at comfortable listening volumes in a quiet room without requiring a separate supply boost converter.
For a tablet or Bluetooth speaker design, how does the LM4863LQ/NOPB simplify the audio output stage?
The LM4863LQ/NOPB uses a bridge-tied load output topology that directly drives each speaker with differential output, eliminating the need for large electrolytic output coupling capacitors that would otherwise be required in AC-coupled single-ended designs. This removes two capacitors of typically 100 µF to 470 µF each, reducing PCB area and component cost while improving low-frequency bass response down to the speaker's own resonant frequency.
What audio frequency bandwidth and noise performance does the LM4863LQ/NOPB provide?
The LM4863LQ/NOPB supports an audio bandwidth of 20 kHz, which covers the full audible frequency range from 20 Hz to 20 kHz. With a 98 dB signal-to-noise ratio, the amplifier keeps noise levels well below the threshold of audibility, ensuring that background hiss is inaudible during quiet passages in music or voice playback at typical consumer volume levels.
What is the advantage of the 24-pin QFN package of the LM4863LQ/NOPB for portable device PCB layout?
The 24-pin QFN (R-XQCC-N24) package used by the LM4863LQ/NOPB provides a small footprint of approximately 4 mm x 4 mm with an exposed thermal pad, allowing efficient heat dissipation at 2.7 W per channel without a bulky heatsink. Its leadless construction and fine 0.5 mm pitch enable tight placement near the audio codec or DAC, minimizing trace lengths that could otherwise introduce noise in the analog signal path.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.6200 | $4.62 |
| 100+ | $3.4600 | $346.00 |
| 500+ | $2.8800 | $1440.00 |
| 1000+ | $2.7800 | $2780.00 |
| 2000+ | $2.7500 | $5500.00 |
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