LM4915LQX/NOPB Texas Instruments Integrated Circuit (Other) In Stock
The LM4915LQX/NOPB is a single-channel mono Class-AB headphone amplifier delivering 0.28 W nominal output power with 20 kHz audio bandwidth in a compact 8-pin WQFN package. It is optimized for portable electronics driving 32-ohm headphone loads from low-voltage supplies. Available from stock worldwide with lead-free RoHS-compliant e3 finish.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- LM4915LQX/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1000(MOQ 250)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Class-AB audio amplifier delivering 0.28 W nominal output power into 32-ohm headphone loads within 20 kHz audio bandwidth
- Compact 8-pin WQFN package with exposed pad for minimal PCB footprint in portable consumer audio designs
- Low-voltage optimized architecture enabling battery-powered headphone amplification from single-cell supplies without booster
- Single-channel mono design with low quiescent current for extended battery life in handheld audio and communication devices
Applications
The LM4915LQX/NOPB is designed for headphone output stages in portable media players, smartphones, tablets, and handheld gaming devices where compact board area and low power consumption are required. Its 0.28 W output power and 20 kHz bandwidth deliver clear audio reproduction into standard 32-ohm headphones at listening volume levels. The WQFN package allows dense PCB integration alongside codec ICs in ultra-thin consumer product designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | CLASS AB AUDIO AMPLIFIER |
| JESD-30 Code | S-PQCC-N8 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Output Power-Nom | 0.28W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC8,.08SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 3.5mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.635mm |
| 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 LM4915LQX/NOPB deliver into a 32-ohm headphone load?
LM4915LQX/NOPB delivers a nominal 0.28 W output power into a 32-ohm headphone load, with a rated maximum of 0.4 W under peak conditions. This power level is sufficient for driving standard stereo headphones at comfortable listening levels in portable consumer audio applications.
What audio bandwidth does LM4915LQX/NOPB support and how does that compare to human hearing range?
LM4915LQX/NOPB has a nominal bandwidth of 20 kHz, which covers the full range of human audible frequencies from 20 Hz to 20 kHz. This ensures faithful reproduction of the complete audio spectrum without high-frequency roll-off within the perceptible range for headphone listening applications.
Why is the WQFN package of LM4915LQX/NOPB advantageous for thin portable device PCB layouts?
The 8-pin WQFN package of LM4915LQX/NOPB has a very small footprint compared to SOIC or SOT-23 alternatives, with an exposed thermal pad that simultaneously reduces package height and improves heat dissipation. This allows the amplifier to be placed directly adjacent to the audio codec in space-constrained PCB layers of smartphones and tablets with sub-1 mm Z-height budgets.
When should a designer choose LM4915LQX/NOPB over a Class-D headphone amplifier for the same application?
LM4915LQX/NOPB Class-AB architecture is preferred when audio quality and low noise floor are the priority, as Class-AB amplifiers introduce less switching noise and EMI interference than Class-D designs that operate at 200 kHz to 1 MHz switching frequencies. For 0.28 W headphone applications at 32 ohms, the efficiency advantage of Class-D is marginal compared to the audio purity benefit of Class-AB in sensitive portable audio equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $1.2400 | $310.00 |
| 500+ | $1.1900 | $595.00 |
| 4500+ | $1.1000 | $4950.00 |
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