| Audio input type | Analog Input |
| Architecture | Class-AB |
| Speaker channels (Max) | Mono |
| Power stage supply (Max) (V) | 5.5 |
| Power stage supply (Min) (V) | 2 |
| Load (Min) (ohms) | 8 |
| Output power (W) | 2.3 |
| THD + N @ 1 kHz (%) | 0.25 |
| Iq (Typ) (mA) | 6.5 |
| Control interface | Hardware |
| Closed/open loop | Open |
| Analog supply (Min) (V) | 2 |
| Analog supply (Max) (V) | 5.5 |
| PSRR (dB) | 65 |
| Operating temperature range (C) | -40 to 85 |
- Does Not Require Output Coupling Capacitors, Bootstrap Capacitors, Or Snubber Circuits
- 10-pin VSSOP and 8-pin SOIC Packages
- Unity-Gain Stable
- External Gain Set
Key Specifications
- THD+N at 1kHz for 1W Continuous Average Output Power into 8? 0.5% (max)
- Output Power At 1kHz Into 8? with 10% THD+N 1.5 W (typ)
- Shutdown Current 0.01μA (typ)
- Supply Voltage Range 2.0V to 5.5 V
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The LM4876 is a single 5V supply bridge-connected audio power amplifier capable of delivering 1.1W (typ) of continuous average power to an 8? load with 0.5% THD+N.
Like other audio amplifiers in the Boomer series, the LM4876 is designed specifically to provide high quality output power with a minimal amount of external components. The LM4876 does not require output coupling capacitors, bootstrap capacitors, or snubber networks. It is perfectly suited for low-power portable systems.
The LM4876 features an active low externally controlled, micro-power shutdown mode. Additionally, the LM4876 features an internal thermal shutdown protection mechanism. For PCB space efficiency, the LM4876 is available in VSSOP and SOIC surface mount packages.
The unity-gain stable LM4876's closed loop gain is set using external resistors.