LM4902 - 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode

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.

Products containing the "LM4902" keyword are: LM4902 , LM4902LD , LM4902LD/NOPB , LM4902LDBD , LM4902LDX , LM4902MM , LM4902MM (P/B) , LM4902MM/NOP8 , LM4902MM/NOPB , LM4902MM/NOPB , LM4902MM/NOPE , LM4902MMNOPB , LM4902MMX , LM4902MMX NOPB , LM4902MMXNOPB , LM4902MX

• VSSOP and WSON Packaging
• No Output Coupling Capacitors, Bootstrap Capacitors, or Snubber Circuits are Necessary
• Thermal Shutdown Protection Circuitry
• Unity-Gain Stable
• External Gain Configuration Capability
• Latest Generation "Click and Pop" Suppression Circuitry

Key Specifications

• THD+N at 1kHz for 265mW Continuous Average Output Power into 8Ω, V_DD = 3.3V 1.0% (max)
• THD+N at 1kHz for 675mW Continuous Average Output Power into 8Ω, V_DD = 5V 1.0% (max)
• Shutdown Current 0.1µA (typ)

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