The LM4902 is a bridged audio power amplifier capable of delivering 265mW of continuous average power into an 8Ω load with 1% THD+N from a 3.3V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power from a low supply voltage while requiring a minimal amount of external components. Since the LM4902 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications.
The LM4902 features an externally controlled, low power consumption shutdown mode, and thermal shutdown protection.
The closed loop response of the unity-gain stable LM4902 can be configured by external gain-setting resistors.
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| Audio input type | Analog Input |
| Architecture | Class-AB |
| Speaker channels (max) | Mono |
| Rating | Catalog |
| Power stage supply (max) (V) | 5.5 |
| Power stage supply (min) (V) | 2 |
| Load (min) (Ω) | 8 |
| Output power (W) | 1 |
| THD + N at 1 kHz (%) | 0.4 |
| Iq (typ) (mA) | 4 |
| Control interface | Hardware |
| Closed/open loop | Closed |
| Analog supply (min) (V) | 2 |
| Analog supply voltage (max) (V) | 5.5 |
| PSRR (dB) | 70 |
| Operating temperature range (°C) | -40 to 85 |
| VSSOP (DGK) | 8 | 14.7 mm² 3 x 4.9 |
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