Series:	Boomer®
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Class AB
Output Type:	2-Channel (Stereo) with Stereo Headphones
Max Output Power x Channels @ Load:	1.6W x 2 @ 4 Ohm; 75mW x 2 @ 32 Ohm
Voltage - Supply:	2.7 V ~ 5.5 V
Features:	3D, Depop, I²C, Mute, Shutdown, Thermal Protection, Volume Control
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	28-WQFN (5x5)
Package / Case:	28-UFQFN Exposed Pad
Base Part Number:	LM4859

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LM4859SP/NOPB Application Field And Working Principle

Introduction

The LM4859SP/NOPB is a linear amplifier used in audio applications. It has been designed to provide a low distortion, high signal to noise ratio audio signal that is well suited for the most demanding audio applications. This amplifier has been designed to be used in stereo and multi-channel audio systems.

Application Field

The LM4859SP/NOPB is a power amplifier that is well suited for use in stereo and multi-channel audio systems such as automotive systems and home theater systems. The amplifier can be used with a wide range of power management ICs and associated circuitry to provide a complete audio system solution. The LM4859SP/NOPB can be used in combination with voltage regulators and other active components to provide the necessary power management and control functions associated with audio systems. The LM4859SP/NOPB can also be used in combination with voltage regulators and other active components to provide the necessary power management and control functions associated with automotive audio systems. The LM4859SP/NOPB can be used in combination with voltage regulators and other active components to provide the necessary power management and control functions associated with industrial audio systems.

Benefits & features

The LM4859SP/NOPB offers excellent power output, high signal to noise ratio, low distortion, high current gain, low power consumption and a wide supply voltage range. It also offers a number of features that are of great benefit to the user. These features include an adjustable soft start, an adjustable current limiter, an externally adjustable bias, an externally adjustable audio input sensitivity, an adjustable output voltage range, an adjustable gain and a wide variety of output protection features.

Working Principle

The LM4859SP/NOPB is a linear amplifier that uses a single N-channel power MOSFET as the power device and a complementary common emitter amplifier topology to provide a high current gain and a wide output voltage range. The amplifier uses two N-channel power MOSFETs in a complementary common source configuration. The amplifier is designed to operate from a wide supply voltage range from 5V to 80V. The amplifier’s input stage is designed to provide an adjustable gain from 0.5 to 10. The amplifier can also be configured to provide single-ended or differential outputs.The amplifier’s output stage is designed to provide a low output impedance, high current gain and wide bandwidth, making it well suited for driving low impedance loads. The amplifier’s output stage also provides current limiting, thermal protection, and over-voltage protection. The amplifier is designed to be used in a variety of applications including audio, video and automotive systems. The amplifier can also be used in motor control and power management applications.

Conclusion

The LM4859SP/NOPB is a highly efficient and versatile power amplifier that is well suited for audio applications. It offers features such as adjustable gain, adjustable soft start, adjustable input sensitivity, adjustable output voltage range, current limiting and over-voltage protection. The amplifier is also designed to operate from a wide supply voltage range from 5V to 80V. This makes the amplifier suitable for a variety of applications including stereo, automotive, and industrial systems.

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