LM1875T/LB05

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - High-performance audio amplifier - Suitable for Hi-Fi applications - Provides excellent sound quality and low distortion - Can deliver up to 20 watts of power - Operates on a wide range of supply voltages - Designed for single-ended systems

Package: TO-220-5L (LM1875T) or LB05 (LM1875T/LB05)

Essence: The LM1875T/LB05 is a high-performance audio power amplifier IC that is widely used in Hi-Fi applications. It offers excellent sound quality, low distortion, and can deliver up to 20 watts of power. The IC operates on a wide range of supply voltages and is designed for single-ended systems.

Packaging/Quantity: The LM1875T is available in a TO-220-5L package, while the LM1875T/LB05 variant comes in an LB05 package. The quantity per package may vary depending on the supplier.

Specifications

• Supply Voltage Range: ±10V to ±60V
• Output Power: Up to 20W
• Total Harmonic Distortion (THD): 0.015% (typical)
• Input Impedance: 150kΩ
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM1875T/LB05 IC has a 5-pin configuration:

1. Pin 1: Non-Inverting Input (+IN)
2. Pin 2: Inverting Input (-IN)
3. Pin 3: Negative Power Supply (V-)
4. Pin 4: Positive Power Supply (V+)
5. Pin 5: Output (OUT)

Functional Features

• High-quality audio amplification
• Low distortion and noise
• Wide supply voltage range allows flexibility in system design
• Thermal shutdown protection
• Short-circuit protection
• Internal current limiting

Advantages and Disadvantages

Advantages: - Excellent sound quality - Low distortion - Flexible supply voltage range - Built-in protection features

Disadvantages: - Limited output power compared to some other power amplifier ICs - Requires external components for a complete amplifier circuit

Working Principles

The LM1875T/LB05 operates as a class AB audio power amplifier. It amplifies the input audio signal and delivers it to the connected speaker or load. The IC utilizes a combination of voltage and current amplification stages to achieve high-quality audio reproduction with low distortion.

Application Field Plans

The LM1875T/LB05 is commonly used in various audio applications, including: - Hi-Fi stereo systems - Home theater systems - Audio amplifiers for musical instruments - Public address (PA) systems - Car audio systems

Alternative Models

Other alternative models that can be considered as replacements or alternatives to the LM1875T/LB05 include: - TDA2030A - TDA2050 - LM3886 - TPA3116D2 - STA540

These alternative models offer similar functionality and performance characteristics, allowing designers to choose the most suitable option for their specific application requirements.

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