Product Summary
The LM4865M is a mono bridged audio power amplifier with DC volume control. It is capable of delivering 750 mW of continuous average power into an 8W load with less than 1% THD from a 5V power supply. Switching between bridged speaker mode and headphone (single ended) mode is accomplished via a headphone sense pin. In addition, the LM4865M is set into low current consumption shutdown mode (0.7 μA typical) by lowering the DC Vol/SD pin to below 0.3V. The device is designed specifically to provide high power audio output, with quality sound, from a low supply voltage source while requiring the minimal amount of external components. The applications of the LM4865M include GSM phones and accessories, DECT, office phones, Hand held radio and other portable audio devices.
Parametrics
LM4865M absolute maximum ratings: (1)Supply Voltage: 6.0V; (2)Storage Temperature: -65 to +150℃; (3)Input Voltage: -0.3V to VDD +0.3V; (4)Power Dissipation: Internally Limited; (5)ESD Susceptibility: 2000V; (6)ESD Susceptibility: 200V; (7)Junction Temperature: 150℃; (8)Vapor Phase (60 sec.): 215℃; (9)Infrared (15 sec.): 220℃; (10)Thermal Resistance, θJC: 35℃/W; θJA: 150℃/W.
Features
LM4865M features: (1)DC volume control; (2)Headphone amplifier mode; (3)Click and pop suppression; (4)Shutdown control when volume control pin is low; (5)Thermal shutdown protection.
Diagrams
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