LM4865

ACTIVE

750-mW, stereo, analog input, Class-AB audio amplifier with DC volume control & headphone amp

Product details

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Control interface Hardware Output power (W) 1 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.6 Load (min) (Ω) 8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Control interface Hardware Output power (W) 1 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.6 Load (min) (Ω) 8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • DC Voltage Volume Control
  • Headphone Amplifier Mode
  • “Click and Pop” Suppression
  • Shutdown Control When Volume Control Pin Is Low
  • Thermal Shutdown Protection

Key Specifications

  • PO at 1.0% THD+N Into 8Ω SOIC, Micro SMD 750 mW (typ)
  • PO at 10% THD+N Into 8Ω SOIC, Micro SMD 1W (typ)
  • Shutdown Current 0.7µA(typ)
  • Supply Voltage Range 2.7V to 5.5 V

All trademarks are the property of their respective owners.

  • DC Voltage Volume Control
  • Headphone Amplifier Mode
  • “Click and Pop” Suppression
  • Shutdown Control When Volume Control Pin Is Low
  • Thermal Shutdown Protection

Key Specifications

  • PO at 1.0% THD+N Into 8Ω SOIC, Micro SMD 750 mW (typ)
  • PO at 10% THD+N Into 8Ω SOIC, Micro SMD 1W (typ)
  • Shutdown Current 0.7µA(typ)
  • Supply Voltage Range 2.7V to 5.5 V

All trademarks are the property of their respective owners.

The LM4865 is a mono bridged audio power amplifier with DC voltage volume control. The LM4865 is capable of delivering 750mW of continuous average power into an 8Ω load with less than 1% THD when powered by a 5V power supply. Switching between bridged speaker mode and headphone (single ended) mode is accomplished using the headphone sense pin. To conserve power in portable applications, the LM4865's micropower shutdown mode (IQ = 0.7µA, typ) is activated when less than 300mV is applied to the DC Vol/SD pin.

Boomer audio power amplifiers are designed specifically to provide high power audio output while maintaining high fidelity. They require few external components and operate on low supply voltages.

The LM4865 is a mono bridged audio power amplifier with DC voltage volume control. The LM4865 is capable of delivering 750mW of continuous average power into an 8Ω load with less than 1% THD when powered by a 5V power supply. Switching between bridged speaker mode and headphone (single ended) mode is accomplished using the headphone sense pin. To conserve power in portable applications, the LM4865's micropower shutdown mode (IQ = 0.7µA, typ) is activated when less than 300mV is applied to the DC Vol/SD pin.

Boomer audio power amplifiers are designed specifically to provide high power audio output while maintaining high fidelity. They require few external components and operate on low supply voltages.

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Technical documentation

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* Data sheet LM4865 BOOMER 750mW Audio Pwr Amp w/DC Vol Control & Headphone Switch datasheet (Rev. G) May 2, 2013

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Package Pins CAD symbols, footprints & 3D models
VSSOP (DGK) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian

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