Datasheet LM48511SQ/NOPB - National Semiconductor IC, AMP AUDIO 3 W CLASS D 24-LLP

Detailed Description

Manufacturer: National Semiconductor

Description: IC, AMP AUDIO 3 W CLASS D 24-LLP

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Docket:
LM48511 3W, Ultra-Low EMI, Filterless, Mono, Class D Audio Power Amplifier with Spread Spectrum
February 25, 2008
LM48511 3W, Ultra-Low EMI, Filterless, Mono, Class D Audio Power Amplifier with Spread Spectrum
General Description
The LM48511 integrates a boost converter with a high efficiency Class D audio power amplifier to provide 3W continuous power into an 8 speaker when operating from a 5V power supply.

When operating from a 3V to 4V power supply, the LM48511 can be configured to drive 1 to 2.5W into an 8 load with less than 1% distortion (THD+N). The Class D amplifier features a low noise PWM architecture that eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. A selectable spread spectrum modulation scheme suppresses RF emissions, further reducing the need for output filters. The LM48511's switching regulator is a current-mode boost converter operating at a fixed frequency of 1MHz. Two selectable feedbac

Specifications:

• Amplifier Class: D
• Base Number: 48511
• Load Impedance Min: 8 Ohm
• Load Impedance: 8 Ohm
• Mounting Type: SMD
• Number of Channels: 1
• Number of Pins: 24
• Operating Temperature Range: -40°C to +85°C
• Output Power Pout: 3 W
• Output Power: 3 W
• Package / Case: LLP
• Power Rating RMS: 3 W
• SVHC: No SVHC (19-Dec-2011)
• Supply Voltage Range: 3 V to 5.5 V
• THD + N: 0.03% @ 2 W, 8 Ohm, VDD=5V

RoHS: Yes