LM4900MM Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM4900MM is a mono audio power amplifier IC from Texas Instruments delivering 675 mW into 8 Ω with 20 kHz bandwidth and only 1% THD. Designed for single-supply portable consumer devices with shutdown capability and minimal external components. Housed in an 8-pin MSOP package for compact speaker driver circuit designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LM4900MM 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
What are the key features of LM4900MM?
- 675 mW output power into 8 Ω load with 1% THD, providing clear audio in handheld consumer devices
- BTL (bridge-tied load) output configuration eliminates the need for an output coupling capacitor, reducing BOM and board space
- 20 kHz full audio bandwidth ensures faithful reproduction of voice and music frequency content
- Low-quiescent shutdown mode reduces supply current below 1 µA, extending battery life in portable electronics
- Single-supply operation from 2.7 V to 5.5 V with no external bias resistors, simplifying circuit design
What is LM4900MM used for?
The LM4900MM is designed for portable consumer audio applications such as smart speakers, MP3 players, and mobile phone loudspeaker modules requiring up to 675 mW of audio output from a compact 8-pin MSOP. Its BTL output eliminates large electrolytic coupling capacitors, making it ideal for miniaturized PCBs in toys, alarm clocks, and handheld communication devices powered from a 3.3 V or 5 V single supply. The ultra-low shutdown current below 1 µA also suits battery-operated voice alert systems and IoT edge devices where idle power consumption must be minimized.
What are the specifications of LM4900MM?
| YTEOL | 0 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| Harmonic Distortion | 1% |
| JESD-30 Code | S-PDSO-G8 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Output Power-Nom | 0.675W |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the LM4900MM datasheet?
LM4900MM Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM4900MM?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the rated output power and distortion level of the LM4900MM when driving a speaker?
The LM4900MM delivers 675 mW of continuous output power into an 8 Ω speaker load with total harmonic distortion of only 1%. This combination of power and low distortion makes it suitable for portable radios, MP3 players, and mobile device speakers where both audio fidelity and battery life matter.
Why does the LM4900MM not require an output coupling capacitor?
The LM4900MM uses a bridge-tied load (BTL) output stage that biases both speaker terminals to mid-supply potential, so no DC offset exists across the load at any time. Eliminating the output coupling capacitor—typically 100 µF to 220 µF for bass response—saves PCB area, reduces BOM cost, and removes a component that can degrade audio quality over time.
Which supply voltage range can the LM4900MM accept in a 3.3 V USB-powered audio device?
The LM4900MM operates from a single supply voltage between 2.7 V and 5.5 V, making it directly compatible with 3.3 V USB-bus-powered accessories and 5 V wall-adapter products. The amplifier maintains stable output power and 1% THD across this entire supply range without requiring an external regulator.
How does the LM4900MM compare to a discrete audio amplifier stage in a wearable device?
Using the LM4900MM replaces 8 or more discrete components—op-amps, biasing resistors, coupling capacitor—with a single 8-pin MSOP device occupying roughly 3 mm × 3 mm on the PCB. The integrated approach also guarantees the 1% THD specification across the -40°C to 85°C operating temperature range, which is difficult to maintain with discrete circuits that drift individually over temperature and aging.
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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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