LM4951SD Texas Instruments Integrated Circuit (Other) In Stock
The LM4951SD is a single-channel 1.8W audio power amplifier IC from Texas Instruments with 20kHz bandwidth and 1% harmonic distortion. It operates over a wide voltage range and comes in a 10-pin MSOP package for space-constrained designs. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- LM4951SD Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.8W output power with only 1% THD delivers clean audio for portable speaker and intercom applications
- 20kHz bandwidth covers the full audible frequency range for high-fidelity audio reproduction
- Wide supply voltage range accommodates diverse power supply configurations from battery to regulated sources
- Compact 10-pin MSOP package minimizes board area for space-sensitive portable consumer electronics
Applications
The LM4951SD is ideal for portable audio applications such as personal media players, handheld gaming devices, and compact intercom systems where a single-channel amplifier with up to 1.8W output is sufficient. Its wide voltage range and low component count make it a cost-effective solution for battery-powered consumer electronics. The device also finds use in desktop multimedia speakers, toys with audio output, and low-power public address systems.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| Harmonic Distortion | 1% |
| JESD-30 Code | S-PDSO-N10 |
| JESD-609 Code | e0 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Output Power-Nom | 1.8W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC10,.11,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 4.5mA |
| Supply Voltage-Max (Vsup) | 9V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.8mm |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM4951SD:
Frequently Asked Questions
What is the output power of the LM4951SD?
The LM4951SD delivers a nominal output power of 1.8W into an appropriate load impedance, with a harmonic distortion of 1% at full output. This power level is suitable for driving small speakers in portable electronics, alarm systems, and battery-operated consumer devices.
What is the audio bandwidth of the LM4951SD?
The LM4951SD provides a nominal bandwidth of 20kHz, which covers the entire human audible frequency range from 20Hz to 20kHz. This makes it capable of reproducing full-range audio content with accurate fidelity across music, speech, and alarm tones.
What package is the LM4951SD available in?
The LM4951SD comes in a 10-pin MSOP (Micro Small Outline Package) surface-mount package, offering a compact footprint for dense PCB layouts. This package type is suited to automated pick-and-place assembly and reflow soldering in high-volume production.
Is the LM4951SD RoHS compliant?
The LM4951SD carries a Pb-free code of 'No,' indicating it is not lead-free and may not be RoHS compliant in its standard form. Designers targeting RoHS-compliant designs should verify availability of a lead-free variant or seek a compliant alternative from Texas Instruments.
What are common applications for the LM4951SD audio amplifier?
Common applications include portable media players, handheld gaming consoles, desktop multimedia speakers, intercom handsets, and electronic toys. The 1.8W single-channel output with low distortion and wide bandwidth makes it a versatile choice for any product requiring compact, efficient audio amplification.
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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.
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