LM4673SDX/NOPB

Series:	Boomer®, PowerWise®
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Class D
Output Type:	1-Channel (Mono)
Max Output Power x Channels @ Load:	2.65W x 1 @ 4 Ohm
Voltage - Supply:	2.4 V ~ 5.5 V
Features:	Depop, Differential Inputs, PWM, Short-Circuit and Thermal Protection, Shutdown
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	8-WSON (3x3)
Package / Case:	8-WFDFN Exposed Pad
Base Part Number:	LM4673

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Linear - Amplifiers - Audio

LM4673SDX/NOPB Application Field and Working Principle

The LM4673SDX/NOPB is a monolithic audio power amplifier from Texas Instruments. It is designed to operate from a single power source and contains a power amplifier, a power modulator, an error amplifier, and a bias generator. It was created to reduce the cost and complexity of audio designs while retaining flexibility.The LM4673SDX/NOPB architecture integrates a high-performance audio amplifier with two separate power amplifiers. The power amplifiers are used to drive the output devices, while the audio amplifier is used to improve the audio performance. The two power amplifiers work together, with one driving the positive side of the output and the other driving the negative side. This allows the output to be symmetrical, which improves the sound quality of the system. The power amplifiers are driven by a single power source, which reduces complexity and cost.The LM4673SDX/NOPB employs a single chip power modulation design. This design is used to control the power output and the voltage delivered to the drivers. A constant voltage loop is used to maintain the voltage. This loop is driven by the error amplifier. The error amplifier will take the voltage from the output and compare it to the reference voltage. If the difference is too great, the error amplifier will send a signal to the power modulator which will adjust the power output.The LM4673SDX/NOPB utilizes a bias generator to regulate the quiescent current of the system. The biasing circuit is used to ensure optimum efficiency by optimizing the output impedance and power transfer efficiency. The biasing circuit is also used to minimize distortion and increase the output power.The LM4673SDX/NOPB is suitable for use in a wide range of applications including consumer, automotive, professional audio and high-fidelity systems. This device has been designed to take advantage of improved power efficiency, increased power handling capabilities, and improved audio performance in order to provide a cost-effective solution for audio applications.In conclusion, the LM4673SDX/NOPB is an integrated audio amplifier designed for ease of use, high performance, and quality sound. The application field for this device is in consumer, automotive, professional audio and high-fidelity systems. The single chip power modulation design and biasing circuit provide maximum efficiency and minimal distortion while the two separate power amplifiers used to drive the output devices provide symmetrical output with improved sound quality.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description