Datasheet LM4673SD - National Semiconductor AUDIO AMP, MONO CLASS D, POWERWISE — 数据表

详细说明

Manufacturer: National Semiconductor

Description: AUDIO AMP, MONO CLASS D, POWERWISE

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Docket:
LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier
November 1, 2007
LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier
General Description
The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier.

A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. The LM4673 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4 speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V. The LM4673 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8 speaker, the IC's efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power. The LM4673 features a low-power consumption shut

Specifications:

• Amplifier Class: D
• Amplifier Type: Power
• Base Number: 4673
• Load Impedance Min: 4 Ohm
• Load Impedance: 4 Ohm
• Mounting Type: SMD
• Number of Amplifiers: 1
• Number of Channels: 1
• Number of Pins: 8
• Operating Temperature Range: -40°C to +85°C
• Output Power Pout: 2.65 W @ 4 Ohm
• Output Power: 2.65 W
• Package / Case: LLP
• Power Rating RMS: 2.65 W
• SVHC: No SVHC (19-Dec-2011)
• Supply Voltage + Nom: 5.5 V
• Supply Voltage Range: 2.4 V to 5.5 V
• THD + N: 0.03% @ 100 mW, VDD=5V

RoHS: Yes