LA4440 Power Amplifier: 6W 2-Channel Amplifier, Pinout and Circuit Diagram [Video]
Audio Amplifiers 14-SIP
LA4440 is a two-channel audio power amplifier IC with inbuilt in dual channels that enable it for stereo and bridge amplifier applications. This article mainly covers pinout, features, datasheet pdf, circuit, and other details about the LA4440 amplifier.

DIY Powerful Ultra Bass Amplifier Using LA4440 IC with Heavy Bass Treble Volume
What is LA4440?
The LA4440 is a two-channel audio power amplifier IC with dual channels built-in, making it suitable for stereo and bridge amplifier applications. It produces 6 W per channel in dual mode and 19 W in bridge mode.
LA4440 Pinout


LA4440 Pinout
| Pin No. | PinName |
| 1 | NF1 |
| 2 | IN 1 |
| 3 | Preamp. GND |
| 4 | Audio Muting |
| 5 | DC |
| 6 | IN2 |
| 7 | NF2 |
| 8 | Power AMP GND2 |
| 9 | B.S2 |
| 10 | OUT2 |
| 11 | Vcc |
| 12 | OUT1 |
| 13 | B.S1 |
| 14 | Power AMP GND1 |
LA4440 CAD Model

LA4440 Symbol

LA4440 Footprint

LA4440 3D Model
Specifications
- TypeParameter
- Factory Lead Time10 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Through Hole - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
14-SIP - Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-20°C~75°C TA - Pbfree Code
The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.
yes - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - TypeClass AB
- Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
13.2V - Reach Compliance Code
Reach Compliance Code refers to a designation indicating that electronic components meet the requirements set by the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation in the European Union. It signifies that the manufacturer has assessed and managed the chemical substances within the components to ensure safety and environmental protection. This code is vital for compliance with regulations aimed at minimizing risks associated with hazardous substances in electronic products.
compliant - Output Type
The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.
2-Channel (Stereo) - Max Output Power x Channels @ Load
Max Output Power x Channels @ Load is a specification that describes the maximum power output that an electronic component, such as an amplifier or audio device, can deliver across a certain number of channels at a specific load impedance. This parameter is important for understanding the capability of the component to drive speakers or other devices effectively. The value is typically expressed in watts and can vary depending on the number of channels being used and the impedance of the load. It helps users determine the compatibility of the component with their audio setup and ensures that the component can provide sufficient power for optimal performance.
6W x 2 @ 4 Ω
LA4440 Block Diagram

LA4440 Block Diagram
LA4440 Features
• Built-in 2 channels (dual) enabling use in stereo and bridge amplifier applications.
Dual: 6W×2 (typ.)
Bridge: 19W (typ.)
• Minimum number of external parts required.
• Small pop noise at the time of power supply ON/OFF and good starting balance.
• Good ripple rejection: 46dB (Typ.)
• Good channel separation.
• Small residual noise (Rg=0).
• Low distortion over a wide range from low frequencies to high frequencies.
• Easy to design radiator fin.
• Built-in audio muting function.
• Built-in protectors.
a. Thermal protector
b. Overvoltage, surge voltage protector
c. Pin-to-pin short protector
Where to use LA4440 IC
The LA4440 is used in a wide range of applications including home theatres, car automatic and a variety of other applications, The bass created with this IC is so powerful and gives you a magnificent effect experience.
6W+6W stereo amplifier using a LA4440 IC
The 6W+6W stereo amplifier's circuit diagram is depicted in Fig. 2. The LA4440 (IC1), two loudspeakers (LS1 and LS2), and a few additional components make up the system.

LA4440 Circuit Diagram
The +12V power supply is connected to pin 11 of IC1. As a filter, the electrolytic capacitor C12 (1000F/35V) is connected between +12V and the ground.
Through electrolytic capacitor C8 (220F/35V), the left speaker (LS1) is linked to pin 10 of IC1. Through electrolytic capacitor C9 (220F/25V), the right speaker (LS2) is connected to pin 12.
The audio input signal is connected via a 3-pin connector (CON2). Capacitor C1 (4.7F/35V) connects the left channel audio input to pin 6 of IC1, while capacitor C2 (4.7F/35V) connects the right channel audio input to pin 2 of IC1.
19W Bridge Amplifier Circuit Using a LA4440 IC

LA4440 Circuit Diagram
The output power of the IC LA4440 in Bridge mode in the circuit is 19 watts. Use 4–8 speakers in bridge mode. Use two copies of the amplifier circuit below in bridge mode if you want stereo output (19w+19w). R3&R4 are resistors that are used to control the voltage gain and make the input signal for the inverting amplifier.
LA4440 Package Dimensions

LA4440 Package Dimensions
LA4440 Manufacturer
ON Semiconductor (Nasdaq: ON) is driving energy-efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy-efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace, and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices, and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.
Datasheet PDF
- Datasheets :
How many watts is 4440 IC?
19 Watts Simple Amplifier Circuit.
What is the output of 4440 IC?
The IC is a dual-channel audio power amplifier, with low distortion, and a good frequency range. Using 2 channels, the LA4440 will output 6 watts per channel, which can drive much larger speakers than a laptop, can hold.
What is the use of LA4440 IC?
The Integrated Circuit LA4440 is used in a wide range of applications including home theatres, car automatic and a variety of other applications, The bass created with this IC is so powerful and gives you a magnificent effect experience.
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