LM4871M/NOPB

Series:	Boomer®
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Class AB
Output Type:	1-Channel (Mono)
Max Output Power x Channels @ Load:	3W x 1 @ 3 Ohm
Voltage - Supply:	2 V ~ 5.5 V
Features:	Shutdown, Thermal Protection
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Base Part Number:	LM4871

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include "head.php"title: LM4871M/NOPB application field and working principle

Introduction of LM4871M/NOPB

LM4871M/NOPB (hereinafter referred to as "LM4871M/NOPB") is a dual-channel audio amplifiers designed by Bosch Semiconductor. It can work in both mono and stereo audio applications for power output levels up to 25W. The amplifier features a 4002 break frequency filter, allowing frequencies up to 2kHz to be easily amplified. The amplifier features an adjustable gain control, allowing for higher gain settings if required. It is a very efficient amplifier, with a power efficiency of up to 80%.

Application field of LM4871M/NOPB

The LM4871M/NOPB is an ideal solution for many audio applications and can be used in plenty of devices including AV receivers and active speakers. It is also ideal for car audio, multimedia projects, and gaming systems. The amplifier can be used in both indoor and outdoor settings, thanks to its high power efficiency and low power consumption.

Working Principle of LM4871M/NOPB

The operation of the LM4871M/NOPB amplifier is governed by two main processes. The first is the amplifier gain control, which is also known as the Voltage Gain Control (VGC). This is an adjustable gain control for setting the amplifier gain from a minimum of 6dB up to a maximum of 20dB. The second process is the power output stage. This is used to match the output power of the amplifier to the impedance of the load. In mono mode, the power output can range from 10W to 25W; in stereo mode, the power output can range from 20W to 50W.

Conclusion

The LM4871M/NOPB is a versatile, powerful and efficient audio amplifier, capable of amplifying signals up to 2kHz in both mono and stereo modes. It can be used in both indoor and outdoor settings and its adjustable gain control allows for higher gain settings, if required. Thanks to its high power efficiency and low power consumption, the LM4871M/NOPB is an ideal amplifier for many audio applications, such as AV receivers and active speakers, car audio, multimedia projects, and gaming systems.

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