Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier With Spread Spectrum

The LM4675 is a single supply, high efficiency, 2.65W, mono, Class D Audio Amplifier A spread spectrum, filterless PWM architecture reduces EMI and eliminates the output Filter reducing external component count, board area consumption, system cost, and simplifying design.
The LM4675 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 2.2W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V. The wide band spread spectrum architecture of the LM4675 reduces EMI-radiated emissions due to the Modulator frequency.
The LM4675 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 89% at 400mW output power.
The LM4675 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a Logic low (GND).
The gain of the LM4675 is externally configurable which allows independent gain control from multiple sources by summing the signals. Output short circuit and thermal overload protection prevent the device from damage during fault conditions.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM4675SDX/NOPB Texas Instruments Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier with Spread Spectrum 8-WSON
LM4675TL/NOPB Texas Instruments Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier with Spread Spectrum 9-DSBGA -40 to 85
LM4675TLX/NOPB Texas Instruments Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier with Spread Spectrum 9-DSBGA -40 to 85
LM4675SD/NOPB Texas Instruments Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier with Spread Spectrum 8-WSON
LM4675 's PackagesLM4675 's pdf datasheet
LM4675SDBD
LM4675TLBD
LM4675SD
LM4675SDX
LM4675TL
LM4675TLX




LM4675 Pinout, Pinouts
LM4675 pinout,Pin out
This is one package pinout of LM4675,If you need more pinouts please download LM4675's pdf datasheet.

LM4675 Application circuits
LM4675 circuits
This is one application circuit of LM4675,If you need more circuits,please download LM4675's pdf datasheet.


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