LM4862MX

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - High efficiency - Low distortion - Small package size - Wide supply voltage range

Package: SOIC (Small Outline Integrated Circuit)

Essence: LM4862MX is a high-performance audio power amplifier IC designed for portable electronic devices.

Packaging/Quantity: The LM4862MX is available in a standard SOIC package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.1W per channel
• Total Harmonic Distortion (THD): 0.1% at 1kHz, 0.5W output power
• Efficiency: Up to 90%
• Shutdown Current: 0.6µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4862MX has a total of 16 pins. Here is the detailed pin configuration:

1. SHUTDOWN - Shutdown control input
2. VDD - Positive supply voltage
3. GND - Ground
4. BYPASS - Bypass capacitor connection
5. IN- - Negative input terminal
6. IN+ - Positive input terminal
7. VDD - Positive supply voltage
8. OUT+ - Positive speaker output
9. OUT- - Negative speaker output
10. GND - Ground
11. GAIN - Gain selection
12. GND - Ground
13. GND - Ground
14. GND - Ground
15. GND - Ground
16. VDD - Positive supply voltage

Functional Features

• Single-ended or bridge-tied load (BTL) operation
• Low quiescent current
• Thermal shutdown protection
• Short-circuit and over-temperature protection
• Pop and click suppression circuitry

Advantages and Disadvantages

Advantages: - High efficiency leads to longer battery life in portable devices - Low distortion ensures high-quality audio output - Small package size allows for compact designs - Wide supply voltage range provides flexibility in power source selection

Disadvantages: - Limited output power compared to higher wattage amplifiers - Requires external components for proper operation - Sensitive to improper grounding or layout design, which may introduce noise or interference

Working Principles

The LM4862MX is a class AB audio power amplifier that utilizes a bridge-tied load (BTL) configuration. It operates by amplifying the input audio signal and driving the connected speakers with sufficient power. The amplifier's gain can be adjusted using the GAIN pin, allowing for compatibility with different input signal levels.

Detailed Application Field Plans

The LM4862MX is commonly used in various portable electronic devices, including: - Mobile phones - Tablets - Portable media players - Bluetooth speakers - Gaming consoles

Detailed and Complete Alternative Models

1. LM4863MX - Similar to LM4862MX but with higher output power capability.
2. LM4864MX - Dual-channel version of LM4862MX for stereo applications.
3. LM4865MX - Higher voltage version of LM4862MX for automotive applications.

These alternative models offer similar functionality and characteristics but cater to specific requirements or provide enhanced performance in certain applications.

In conclusion, the LM4862MX is a versatile audio power amplifier IC suitable for portable electronic devices. Its high efficiency, low distortion, and small package size make it an ideal choice for applications where space and power consumption are critical factors. However, designers should consider its limitations in terms of output power and proper grounding/layout design to ensure optimal performance.