The LM4929 is an stereo audio power amplifier capable of delivering 40mW per channel of continuous average power into a 16Ω load or 25mW per channel into a 32Ω load at 1% THD+N from a 3V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4929 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4929 is configured for OCL (Output Capacitor-Less) outputs, operating with no DC blocking capacitors on the outputs.
The LM4929 features a low-power consumption shutdown mode with a faster turn on time. Additionally, the LM4929 features an internal thermal shutdown protection mechanism.
The LM4929 is unity gain stable and may be configured with external gain-setting resistors.
Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.
| Audio input type | Analog Input |
| Architecture | Class-AB |
| Speaker channels (max) | Stereo |
| Rating | Catalog |
| Power stage supply (max) (V) | 5.5 |
| Power stage supply (min) (V) | 2 |
| Load (min) (Ω) | 16 |
| Output power (W) | 0.4 |
| THD + N at 1 kHz (%) | 0.03 |
| Iq (typ) (mA) | 2 |
| Control interface | Shutdown Mode |
| Closed/open loop | Open |
| Analog supply (min) (V) | 2 |
| Analog supply voltage (max) (V) | 5.5 |
| PSRR (dB) | 65 |
| Operating temperature range (°C) | -40 to 85 |
| VSSOP (DGS) | 10 | 14.7 mm² 3 x 4.9 |
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