| 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) | 0.35 |
| SNR (dB) | 102 |
| THD + N @ 1 kHz (%) | 1 |
| Iq (Typ) (mA) | 1.5 |
| Control interface | Hardware |
| Closed/open loop | Closed |
| Analog supply (Min) (V) | 2 |
| Analog supply (Max) (V) | 5.5 |
| Operating temperature range (C) | -40 to 85 |
- WSON, SOIC, and VSSOP Surface Mount Packaging
- Switch On/Off Click Suppression
- Unity-Gain Stable
- Minimum External Components
Key Specifications
- THD+N at 1kHz, 350mW Continuous Average Output Power into 16Ω: 10% (max)
- THD+N at 1kHz, 300mW Continuous Average Output Power into 8Ω: 10% (max)
- Shutdown Current: 0.7μA (typ)
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The LM4819 is a mono bridged power amplifier that is capable of delivering 350mWRMS output power into a 16? load or 300mWRMS output power into an 8? load with 10% THD+N from a 5V power supply.
The LM4819 Boomer audio power amplifier is designed specifically to provide high quality output power and minimize PCB area with surface mount packaging and a minimal amount of external components. Since the LM4819 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications.
The closed loop response of the unity-gain stable LM4819 can be configured using external gain-setting resistors. The device is available in WSON, VSSOP, and SOIC package types to suit various applications.