LM4865 - Texas Instruments

LM4865 750mW Audio Power Amplifier

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 po.

Features

1
•2 DC Voltage Volume Control
• Headphone Amplifier Mode
• “Click and Pop” Suppression
• Shutdown Control When Volume Control Pin Is Low
• Thermal Shutdown Protection APPLICATIONS
• GSM Phones and Accessories, DECT, Office Phones
• Hand Held Radio
• Other Portable Audio Devices KEY SPECIFICATION
• 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 DESCRIPTION The LM4865 is a mono bridged audio power amplifier with DC voltage volume control. The LM4865 is capable of deliver.