LM3886T Audio Power Amplifier: Application, Features and CAD Model
3MHz kHz 68W W Audio Amplifiers 10.69mm mm 4.5mm mm 125W W 11 pins TO-220-11 (Formed Leads)









3MHz kHz 68W W Audio Amplifiers 10.69mm mm 4.5mm mm 125W W 11 pins TO-220-11 (Formed Leads)
The LM3886T is a new type of high-power audio amplifier integrated circuit introduced by the American NS company. The TF behind the LM3886TF is a fully insulated package. Compared with LM1875T, its power is larger.

DIY-AUDIO (PART-1) HIFI LM3886 (100+100W RMS) Stereo Audio Amplifier
LM3886T Description
The LM3886T is a new type of high-power audio amplifier integrated circuit introduced by the Texas Instruments. The TF behind the LM3886TF is a fully insulated package. Compared with LM1875T, its power is larger.
The maximum continuous undistorted average power of 68W under the rated operating voltage also has a relatively complete overvoltage, overcurrent and overheat protection function. The most valuable thing is that it has the function of automatically resisting the current impact when the switch is turned on, so that the speaker can be safe work.
LM3886T Connection Diagram

TO-220 and PFM Plastic Packages
LM3886T CAD Model
Symbol

Footprint

3D Model

LM3886T Feature
• 68W Cont. Avg. Output Power into 4Ω at VCC = ±28V
• 38W Cont. Avg. Output Power into 8Ω at VCC = ±28V
• 50W Cont. Avg. Output Power into 8Ω at VCC = ±35V
• 135W Instantaneous Peak Output Power Capability
• Signal-to-Noise Ratio ≥ 92dB
• An Input Mute Function
• Output Protection from a Short to Ground or to the supplies, via Internal Current Limiting
• Output Over-Voltage Protection against Transients from Inductive Loads
• Supply Under-Voltage Protection, not Allowing Internal Biasing to Occur when |VEE| + |VCC| ≤12V, thus Eliminating Turn-On and Turn-Off 0.004%. Transients
• 11-Lead TO-220 Package
• Wide Supply Range 20V - 94V
Specifications
- TypeParameter
- Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Through Hole - 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.
TO-220-11 (Formed Leads) - Number of Pins11
- Weight4.535924g
- 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~85°C TA - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube - Series
In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.
Overture™ - JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e0 - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Discontinued - 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) - Number of Terminations11
- ECCN Code
An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.
EAR99 - TypeClass AB
- Terminal Finish
Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.
Tin/Lead (Sn/Pb) - Max Power Dissipation
The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.
125W - 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.
20V~84V ±10V~42V - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
ZIG-ZAG - Number of Functions1
- Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
LM3886 - Pin Count
a count of all of the component leads (or pins)
3 - 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.
1-Channel (Mono) - Max Output Current
The maximum current that can be supplied to the load.
11.5A - Number of Channels1
- Power Dissipation
the process by which an electronic or electrical device produces heat (energy loss or waste) as an undesirable derivative of its primary action.
125W - Output Current
The rated output current is the maximum load current that a power supply can provide at a specified ambient temperature. A power supply can never provide more current that it's rated output current unless there is a fault, such as short circuit at the load.
11.5A - Quiescent Current
The quiescent current is defined as the current level in the amplifier when it is producing an output of zero.
85mA - Output Power
That power available at a specified output of a device under specified conditions of operation.
68W - Common Mode Rejection Ratio
Common Mode Rejection Ratio (CMRR) is a measure of the ability of a differential amplifier to reject input signals that are common to both input terminals. It is defined as the ratio of the differential gain to the common mode gain. A high CMRR indicates that the amplifier can effectively eliminate noise and interference that affects both inputs simultaneously, enhancing the fidelity of the amplified signal. CMRR is typically expressed in decibels (dB), with higher values representing better performance in rejecting common mode signals.
85 dB - Supply Type
Supply Type in electronic components refers to the classification of power sources used to operate the component. It indicates whether the component requires DC or AC power, and if DC, specifies the voltage levels such as low, medium, or high. Different supply types can affect the performance, compatibility, and application of the component in electronic circuits. Understanding the supply type is crucial for proper component selection and integration into electronic designs.
Dual, Single - Input Offset Voltage (Vos)
Input Offset Voltage (Vos) is a key parameter in electronic components, particularly in operational amplifiers. It refers to the voltage difference that must be applied between the two input terminals of the amplifier to nullify the output voltage when the input terminals are shorted together. In simpler terms, it represents the voltage required to bring the output of the amplifier to zero when there is no input signal present. Vos is an important parameter as it can introduce errors in the output signal of the amplifier, especially in precision applications where accuracy is crucial. Minimizing Vos is essential to ensure the amplifier operates with high precision and accuracy.
10mV - Bandwidth
In electronic components, "Bandwidth" refers to the range of frequencies over which the component can effectively operate or pass signals without significant loss or distortion. It is a crucial parameter for devices like amplifiers, filters, and communication systems. The bandwidth is typically defined as the difference between the upper and lower frequencies at which the component's performance meets specified criteria, such as a certain level of signal attenuation or distortion. A wider bandwidth indicates that the component can handle a broader range of frequencies, making it more versatile for various applications. Understanding the bandwidth of electronic components is essential for designing and optimizing circuits to ensure proper signal transmission and reception within the desired frequency range.
3MHz - Gain Bandwidth Product
The gain–bandwidth product (designated as GBWP, GBW, GBP, or GB) for an amplifier is the product of the amplifier's bandwidth and the gain at which the bandwidth is measured.
8MHz - Voltage Gain
Voltage gain is a measure of how much an electronic component or circuit amplifies an input voltage signal to produce an output voltage signal. It is typically expressed as a ratio or in decibels (dB). A higher voltage gain indicates a greater amplification of the input signal. Voltage gain is an important parameter in amplifiers, where it determines the level of amplification provided by the circuit. It is calculated by dividing the output voltage by the input voltage and is a key factor in determining the overall performance and functionality of electronic devices.
115dB - Power Supply Rejection Ratio (PSRR)
Power Supply Rejection Ratio (PSRR) is a measure of how well an electronic component, such as an operational amplifier or voltage regulator, can reject changes in its supply voltage. It indicates the ability of the component to maintain a stable output voltage despite fluctuations in the input supply voltage. A higher PSRR value signifies better performance in rejecting noise and variations from the power supply, leading to improved signal integrity and more reliable operation in electronic circuits. PSRR is typically expressed in decibels (dB).
120dB - Max Dual Supply Voltage
A Dual power supply is a regular direct current power supply. It can provide a positive as well as negative voltage. It ensures stable power supply to the device as well as it helps to prevent system damage.
42V - Max Output Power
The maximum output power = the maximum output current × the rated output voltage
68W - Min Dual Supply Voltage
The parameter "Min Dual Supply Voltage" in electronic components refers to the minimum voltage required for the proper operation of a device that uses dual power supplies. Dual power supplies typically consist of a positive and a negative voltage source. The "Min Dual Supply Voltage" specification ensures that both the positive and negative supply voltages are within a certain range to guarantee the device functions correctly. It is important to adhere to this parameter to prevent damage to the component and ensure reliable performance.
10V - Dual Supply Voltage
Dual Supply Voltage refers to an electronic component's requirement for two separate power supply voltages, typically one positive and one negative. This configuration is commonly used in operational amplifiers, analog circuits, and certain digital devices to allow for greater signal handling capabilities and improved performance. The use of dual supply voltages enables the device to process bipolar signals, thereby enhancing its functionality in various applications.
28V - Input Bias Current
Input Bias Current refers to the small amount of current that flows into the input terminals of an electronic component, such as an operational amplifier. It is primarily caused by the input impedance of the device and the characteristics of the transistors within it. This current is crucial in determining the accuracy of the analog signal processing, as it can affect the level of voltage offset and signal integrity in the application. In many precise applications, minimizing input bias current is essential to achieve optimal performance.
1μA - 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.
68W x 1 @ 4 Ω - Load Impedance
Load impedance is a crucial parameter in electronic components that refers to the impedance presented by the load to the output of a circuit or device. It is a measure of how much the load resists the flow of current from the source. Load impedance is typically expressed in ohms and can greatly affect the performance and efficiency of a circuit. Matching the load impedance to the source impedance is important for maximum power transfer and signal integrity in electronic systems. Failure to properly match load impedance can result in signal distortion, power loss, and reduced overall performance of the circuit.
8Ohm - Features
In the context of electronic components, the term "Features" typically refers to the specific characteristics or functionalities that a particular component offers. These features can vary depending on the type of component and its intended use. For example, a microcontroller may have features such as built-in memory, analog-to-digital converters, and communication interfaces like UART or SPI.When evaluating electronic components, understanding their features is crucial in determining whether they meet the requirements of a particular project or application. Engineers and designers often look at features such as operating voltage, speed, power consumption, and communication protocols to ensure compatibility and optimal performance.In summary, the "Features" parameter in electronic components describes the unique attributes and capabilities that differentiate one component from another, helping users make informed decisions when selecting components for their electronic designs.
Mute, Short-Circuit and Thermal Protection - Height10.69mm
- Length20.02mm
- Width4.5mm
- REACH SVHC
The parameter "REACH SVHC" in electronic components refers to the compliance with the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation regarding Substances of Very High Concern (SVHC). SVHCs are substances that may have serious effects on human health or the environment, and their use is regulated under REACH to ensure their safe handling and minimize their impact.Manufacturers of electronic components need to declare if their products contain any SVHCs above a certain threshold concentration and provide information on the safe use of these substances. This information allows customers to make informed decisions about the potential risks associated with using the components and take appropriate measures to mitigate any hazards.Ensuring compliance with REACH SVHC requirements is essential for electronics manufacturers to meet regulatory standards, protect human health and the environment, and maintain transparency in their supply chain. It also demonstrates a commitment to sustainability and responsible manufacturing practices in the electronics industry.
No SVHC - Radiation Hardening
Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.
No - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
Non-RoHS Compliant
LM3886T External Components Description

LM3886T Typical Application

Typical Audio Amplifier Application Circuit
Parts with Similar Specs
- ImagePart NumberManufacturerPackage / CaseNumber of PinsGain Bandwidth ProductInput Offset Voltage (Vos)Power Supply Rejection Ratio (PSRR)Common Mode Rejection RatioMin Dual Supply VoltageMax Dual Supply VoltageView Compare
LM3886T
TO-220-11 (Formed Leads)
11
8 MHz
10 mV
120 dB
85 dB
10 V
42 V
TO-220
11
8 MHz
10 mV
125 dB
75 dB
10 V
30 V
LM3886T Application
• Component stereo
• Compact stereo
• Self-powered speakers
• Surround-sound amplifiers
• High-end stereo TVs
LM3886T Manufacturer
As a global semiconductor company operating in 35 countries, Texas Instruments (TI) is first and foremost a reflection of its people. From the TIer who unveiled the first working integrated circuit in 1958 to the more than 30,000 TIers around the world today who design, manufacture and sell analog and embedded processing chips, we are problem-solvers collaborating to change the world through technology.
Trend Analysis
Datasheet PDF
- Datasheets :
1.What is the difference between the back package of LM3886T and LM3886TF
The back of LM3886TF is insulated package, LM3886T is copper plastic package
2.What’s the output power of LM3886T
The output power of LM3886T is 60W.
3.Why the fuse of the power amplifier made by lm3886 always broken?
Because the fuse type is wrong, you should use slow-break in the power input stage. At the moment of power-on, because of the self-inductance of the transformer and the moment of charging the filter capacitor, the inrush current is very large, so if you use ordinary ones, it will burn out The slow-blow type fuse is designed for this. It can withstand the impact of a larger current at the moment of opening, and it can still be blown when it fails in normal use. In addition, some power amplifiers are connected to the power amplifier tube after rectification and filtering, and a fuse should be connected here. Quickly.
4.What size transformer is used for LM3886T?
It is depends on the highest withstand voltage of the IC.
5.What’s the difference between LM3886T and LM3886TF’s heat sink?
The heat sink of LM3886TF is not insulated, while that of LM3886T is insulated.
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