LM4923MM/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio amplifier
• Characteristics: Low power, stereo audio subsystem
• Package: 10-pin MSOP package
• Essence: Amplifies audio signals for various applications
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Power Supply Voltage: 2.7V to 5.5V
• Output Power: 1.2W per channel into 8Ω load at 5V supply voltage
• Total Harmonic Distortion + Noise: 0.1% at 1kHz, 1.2W output power
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4923MM/NOPB IC has the following pin configuration:

1. SHDN: Shutdown control input
2. INL: Left channel audio input
3. VDD: Positive power supply
4. GND: Ground
5. BYP: Bypass capacitor connection
6. OUTL: Left channel audio output
7. OUTR: Right channel audio output
8. INR: Right channel audio input
9. VOUT: Negative power supply
10. BST: Boost capacitor connection

Functional Features

• Low power consumption
• Stereo audio amplification
• Thermal shutdown protection
• Short-circuit and overcurrent protection
• Pop and click noise suppression during power-up and shutdown

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for portable devices - Provides high-quality audio amplification - Offers thermal and short-circuit protection

Disadvantages: - Limited output power compared to higher wattage amplifiers - Requires external components for proper operation

Working Principles

The LM4923MM/NOPB is a low-power stereo audio amplifier IC. It amplifies audio signals from the input channels and provides amplified output to drive speakers or headphones. The IC operates on a low voltage supply, making it suitable for battery-powered devices. It incorporates various protection features to ensure safe operation and prevent damage to the IC or connected components.

Detailed Application Field Plans

The LM4923MM/NOPB can be used in various applications, including but not limited to:

1. Portable audio devices: MP3 players, smartphones, tablets
2. Personal computers and laptops
3. Gaming consoles and handheld gaming devices
4. Bluetooth speakers and wireless audio systems
5. Automotive audio systems

Detailed and Complete Alternative Models

1. LM4863: Dual 2.2W Audio Amplifier with Shutdown Mode
2. TPA3110D2: 15-W Stereo Class-D Audio Power Amplifier
3. MAX98357A: Mono Class D Speaker Amplifier with Digital Input and I2S Interface

These alternative models offer similar functionality and can be considered as alternatives to the LM4923MM/NOPB depending on specific requirements and design constraints.

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