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LM4902

ACTIVE

265-mW, mono, analog input Class-AB audio amplifier

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Data sheet

LM4902

ACTIVE
Data sheet Order now

Product details

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

All trademarks are the property of their respective owners.

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

All trademarks are the property of their respective owners.

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.

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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* Data sheet LM4902 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode datasheet (Rev. D) 03 May 2013

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