LM49120TL Texas Instruments Integrated Circuit (Other) In Stock
LM49120TL is a dual-channel Class AB audio power amplifier by Texas Instruments delivering 1.3 W per channel. Key specs: 2-channel output, 1.3 W nominal output power, 16-ball BGA package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- LM49120TL 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 LM49120TL?
- Dual-channel Class AB audio amplifier with 1.3 W nominal output power per channel for stereo speaker driving
- 16-ball BGA package (4 mm x 4 mm) enables ultra-compact PCB designs compared to SOIC or TSSOP alternatives
- Filterless PWM-free Class AB output eliminates external output filter inductors, simplifying the audio signal path
- Optimized for portable consumer electronics with low quiescent current and wide supply voltage compatibility
What is LM49120TL used for?
The LM49120TL is designed for portable consumer electronics requiring compact stereo audio output, such as smartphones, tablets, Bluetooth speakers, and handheld gaming devices. Its 1.3 W per channel output at low supply voltages is sufficient to drive 8 Ω or 4 Ω speakers directly without external filtering, reducing BOM complexity. The small 16-ball BGA footprint allows integration in densely packed PCB layouts where larger audio amplifier packages cannot fit.
What are the specifications of LM49120TL?
| YTEOL | 0 |
| Consumer IC Type | CLASS AB AUDIO AMPLIFIER |
| JESD-30 Code | S-PBGA-B16 |
| JESD-609 Code | e0 |
| Number of Channels | 2 |
| Number of Functions | 1 |
| Output Power-Nom | 1.3W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA16,4X4,20 |
| Package Shape | SQUARE |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 8mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Surface Mount | YES |
| Terminal Finish | Tin/Lead (Sn63Pb37) |
| Terminal Form | BALL |
| Terminal Pitch | 0.5mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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 |
Where can I find the LM49120TL datasheet?
LM49120TL Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM49120TL?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output power and how many channels does the LM49120TL provide?
The LM49120TL delivers 1.3 W nominal output power per channel across its 2 independent Class AB audio channels, enabling stereo speaker driving from a single IC. At a 5 V supply driving an 8 Ω load, output power can reach approximately 1.3 W per channel with less than 1% THD+N. This dual-channel architecture eliminates the need for two separate amplifier ICs in stereo portable audio designs, saving cost and board space.
Why is the LM49120TL a better fit than SOIC-packaged amplifiers for compact tablet audio designs?
The LM49120TL uses a 16-ball BGA package with a 4 mm x 4 mm footprint and 0.5 mm ball pitch, occupying significantly less PCB area than equivalent SOIC-8 or TSSOP-16 packaged amplifiers that typically measure 5 mm x 4 mm or larger. This size advantage is critical in tablet and smartphone PCB layouts where audio amplifier placement competes with RF shields and battery connectors. The BGA package also enables shorter trace lengths to decoupling capacitors, improving high-frequency power supply rejection.
Does LM49120TL require external output filter inductors or coupling capacitors for speaker output?
No, the LM49120TL uses a Class AB output stage that produces a linear analog signal, not a PWM-modulated output, so external LC filters are not required between the amplifier output and the speaker load. Differential (bridge-tied load) output configuration eliminates the need for DC-blocking output capacitors when both speaker terminals are driven, reducing BOM to just supply bypass capacitors and gain-setting resistors. This simplification is particularly valuable in designs with 8 Ω speakers at 5 V supply.
What operating temperature range does LM49120TL support and is it suitable for industrial environments?
The LM49120TL is rated for a commercial-grade operating temperature range of 0°C to +70°C, making it appropriate for consumer electronics and indoor equipment rather than industrial or automotive environments. For designs requiring operation down to -40°C, alternative amplifiers rated for the extended industrial range should be considered. Its 16-ball BGA package dissipates heat through board thermal vias, so PCB copper pour and via density are important for thermal management at sustained 1.3 W output per channel.
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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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