LM4852ITL/NOPB Integrated Circuits (ICs)

Series:	Boomer®
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Class AB
Output Type:	1-Channel (Mono) with Stereo Headphones
Max Output Power x Channels @ Load:	1.5W x 1 @ 4 Ohm; 60mW x 2 @ 32 Ohm
Voltage - Supply:	2.6 V ~ 5.5 V
Features:	Depop, I²C, Mute, Shutdown, Thermal Protection, Volume Control
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	18-µSMD (1.97x2.23)
Package / Case:	18-WFBGA
Base Part Number:	LM4852

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Audio amplifiers allow sound reproduction in Hi-Fi systems and home theaters, as well as for various other applications. They typically amplify signals that have been initially picked up by microphones, or directly via electric guitar jack plugs, mixing consoles and similar devices. The LM4852ITL/NOPB is an efficient power amplifier designed specifically for audio applications, such as amplifying the output of digital-to-analog converters.

Overview of the LM4852ITL/NOPB

The LM4852ITL/NOPB from Texas Instruments is a dual-channel Class D audio amplifier, capable of providing 26 Watts of total power (13W per channel) when driven from a 6V supply. It\'s extremely easy to use, with no external components required. The LM4852ITL/NOPB also boasts an exceptionally low distortion profile and high efficiency levels.

Application Field

The LM4852ITL/NOPB is an ideal solution for a wide range of audio applications, including portable audio and home theater systems. It can also be used to directly drive tweeters, midrange and bass speakers due to its low distortion and low power requirements. Additionally, it can be used to improve the sound quality of existing audio systems with minimal system cost or changes.

Features and Benefits

The LM4852ITL/NOPB offers a number of features and benefits, including:

• Low power consumption thanks to its low quiescent current
• Low distortion
• Wide range of voltage supply options: 3.3V to 6V for stereo and 4.5V to 15V for mono
• Thermal protection
• Short-circuit protection
• Externally adjustable gain from 1V/V to 2V/V
• Low noise
• High efficiency

Working Principle

The LM4852ITL/NOPB is a Class D amplifier, meaning it employs pulse width modulation (PWM) to modulate the input signals. This method of amplification yields far superior efficiency levels compared to the traditional linear amplifier designs.The input signal is first converted to a PWM signal with a MOSFET switch. This PWM signal is then amplified and filtered with a filter stage, producing the desired output.Due to its high efficiency, the LM4852ITL/NOPB produces very little heat, allowing for improved sound quality and lower power consumption.

Conclusion

The LM4852ITL/NOPB is a versatile audio amplifier solution that is suitable for a variety of applications, including portable audio and home theater systems. Its high efficiency and low distortion are attractive features, and it has the added benefit of being extremely easy to use. The LM4852ITL/NOPB is a great choice for anyone looking for a cost-effective, efficient, and reliable audio amplifier solution.

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