LM4766T/LF15

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - Dual-channel audio amplifier - High output power - Low distortion - Wide supply voltage range - Thermal shutdown protection - Short-circuit protection

Package: TO-220-15

Essence: The LM4766T/LF15 is a high-performance dual-channel audio power amplifier IC designed for use in audio systems.

Packaging/Quantity: The LM4766T/LF15 is available in a TO-220-15 package. It is typically sold in quantities of one or more.

Specifications

Supply Voltage Range: ±20V to ±85V
Output Power: 40W per channel (at 1kHz, THD = 0.1%, RL = 8Ω)
Total Harmonic Distortion: 0.1% (at 1kHz, 20W, RL = 8Ω)
Input Sensitivity: 1.23V (RMS)
Input Impedance: 22kΩ
Frequency Response: 10Hz to 70kHz (-3dB)
Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4766T/LF15 has a total of 15 pins. The pin configuration is as follows:

Mute
Non-Inverting Input Channel A
Inverting Input Channel A
VEE (Negative Power Supply)
Output Channel A
VCC (Positive Power Supply)
Non-Inverting Input Channel B
Inverting Input Channel B
Mute
Output Channel B
Standby
Thermal Pad
GND (Ground)
GND (Ground)
Thermal Pad

Functional Features

Dual-channel operation for stereo audio applications
High output power allows for driving speakers with ease
Low distortion ensures high-quality audio reproduction
Wide supply voltage range provides flexibility in various systems
Thermal shutdown protection prevents damage due to excessive heat
Short-circuit protection safeguards the amplifier and connected components

Advantages and Disadvantages

Advantages: - High output power capability - Low distortion for accurate audio reproduction - Wide supply voltage range for versatile applications - Built-in thermal and short-circuit protection

Disadvantages: - Requires external components for a complete audio system - Limited pin configuration options

Working Principles

The LM4766T/LF15 operates as a class AB dual-channel audio power amplifier. It amplifies the input audio signals and drives the connected speakers. The amplifier circuitry ensures low distortion and high output power. The thermal shutdown and short-circuit protection features safeguard the amplifier and connected components from damage.

Detailed Application Field Plans

The LM4766T/LF15 is commonly used in various audio applications, including: - Home theater systems - Stereo receivers - Audio amplifiers - Multimedia speakers - Professional audio equipment

Detailed and Complete Alternative Models

Some alternative models to the LM4766T/LF15 include: - TDA7294 - LM3886 - TPA3116D2 - STA540 - TDA2030A

These alternative models offer similar functionality and can be used as replacements or alternatives to the LM4766T/LF15 in audio amplifier applications.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan LM4766T/LF15 dalam solusi teknis

Q: What is the maximum power output of LM4766T/LF15?
A: The maximum power output of LM4766T/LF15 is 30 watts per channel into an 8-ohm load.
Q: Can LM4766T/LF15 be used in bridge-tied load (BTL) configuration?
A: Yes, LM4766T/LF15 can be used in bridge-tied load configuration to achieve higher power output.
Q: What is the recommended power supply voltage for LM4766T/LF15?
A: The recommended power supply voltage for LM4766T/LF15 is ±25V.
Q: Is it necessary to use a heatsink with LM4766T/LF15?
A: Yes, it is recommended to use a heatsink to dissipate heat and ensure proper thermal management.
Q: Can LM4766T/LF15 be used in audio amplifier applications?
A: Yes, LM4766T/LF15 is commonly used in audio amplifier applications due to its high power output and low distortion.
Q: What is the typical input impedance of LM4766T/LF15?
A: The typical input impedance of LM4766T/LF15 is 150 kΩ.
Q: Does LM4766T/LF15 require external compensation?
A: No, LM4766T/LF15 has internal compensation and does not require external compensation components.
Q: Can LM4766T/LF15 operate on a single power supply?
A: Yes, LM4766T/LF15 can operate on a single power supply with appropriate biasing.
Q: What is the recommended PCB layout for LM4766T/LF15?
A: The recommended PCB layout includes proper grounding, component placement, and thermal considerations for optimal performance.
Q: Are there any common failure modes associated with LM4766T/LF15?
A: Common failure modes include overheating due to inadequate thermal management and overloading beyond the specified limits.