LA4450F-E

Series:	--
Packaging:	Tape & Box (TB)
Part Status:	Obsolete
Type:	Class AB
Output Type:	2-Channel (Stereo)
Max Output Power x Channels @ Load:	20W x 1 @ 4 Ohm
Voltage - Supply:	10 V ~ 30 V
Features:	Short-Circuit and Thermal Protection, Standby
Mounting Type:	Through Hole
Operating Temperature:	-35°C ~ 80°C (TA)
Supplier Device Package:	14-SIP
Package / Case:	14-SIP Exposed Pad

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LA4450F-E application field and working principleThe LA4450F-E from Sanyo Semiconductor, Inc. is a monolithic IC audio power amplifier. This amplifier is a dual-channel, class A amplifier IC, with a maximum output of 20W + 20W. It is primarily utilized for delivering louder, more powerful sound from radios, cassette players, and amplified speakers.This amplifier has several advantages over other types of audio amplifiers, such as its high efficiency, linearity, wide input and output voltage range, and wide frequency range. With its built-in ESD protection, the LA4450F-E helps protect connected components from electrostatic discharges. Furthermore, its standby power consumption is very low at 0.3mA, thereby reducing energy costs.The LA4450F-E is widely used in home audio systems, car audio systems and various portable audio systems. This amplifier is also widely used in professional audio PA systems, where it offers the power and linearity for larger PA systems. In addition, this amplifier is used in applications where harmonic distortion needs to be kept extremely low, such as broadcast and studio sound recording.The power levels of the LA4450E can be varied using its dual-channel, class A circuitry. The amplifier’s input/output overvoltage protection prevents it from clipping signals or damaging connected components.The substrate voltage of the LA4450E is generated by a built-in step-down converter. The operating voltage range for the amplifier is between 2V and 10V, with a low standby current of 0.3mA. The LA4450E can handle a load impedance of 4 Ohms, with an input sensitivity of up to 1Vrms.The LA4450F-E is designed to offer low-distortion linear output, while maintaining high efficiency. The amplifier employs a differential input stage and emitter-follower type output stage. It also utilizes a symmetric power supply voltage and low-loss linearity in order to minimize distortion.The LA4450F-E has a wide bandwidth of 20Hz to 20kHz, which allows it to accommodate a wide range of audio signals. The amplifier also features a low-noise single-ended input design, which helps maintain signal clarity. The amplifier can deliver up to 4A of continuous output current, allowing it to handle larger amplifiers.The LA4450F-E offers excellent performance with low-distortion and high efficiency. Its input/output overvoltage protection ensures that any connected components will be protected from damage in the event of an unexpected surge. With its low standby power consumption, the LA4450F-E helps reduce energy costs, helping to make its use even more cost-effective.

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