The LM4921ITL/NOPB is a high-quality audio amplifier integrated circuit (IC) designed and manufactured by Texas Instruments (TI), a leader in semiconductor solutions. This IC is specifically engineered to provide efficient, low-voltage audio amplification with minimal power consumption, making it an ideal choice for portable and battery-powered applications where space and energy efficiency are critical.
Key Features
- Boomer Audio Power Amplifier: Part of TI's Boomer range, the LM4921 is optimized for delivering high-quality sound.
- Low Voltage Operation: It operates on a supply voltage as low as 2.7V, making it suitable for handheld devices.
- Output Power: The IC can deliver 135mW of continuous average power to a 16Ω load with less than 1% distortion (THD+N) from a 5V power supply.
- Micro-SMD Package: Comes in a tiny micro-SMD package, which is perfect for space-constrained applications.
- Power-Saving Mode: Features a shutdown mode that significantly reduces power consumption when not in use.
- No Sync: The part number ending with NOPB indicates that the product is lead-free and RoHS compliant.
Applications
The LM4921ITL/NOPB is versatile and can be used in a variety of audio applications. It is particularly well-suited for:
- Mobile phones and PDAs
- Portable media players
- Laptop and notebook computers
- Portable gaming devices
Technical Specifications
| Parameter |
Value |
| Supply Voltage (VDD) |
2.7V to 5.5V |
| Output Power |
135mW (16Ω load, 5V supply) |
| Package |
Micro-SMD |
| THD+N |
<1% at 135mW |
| Shutdown Current |
0.7µA (Typical) |
With its compact size and energy-efficient design, the LM4921ITL/NOPB is a superb choice for developers looking to incorporate a reliable audio amplification solution into their next project.