LM48100QMH/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Mono Class D Audio Power Amplifier - High Efficiency - Low Quiescent Current - Small Package Size - Wide Supply Voltage Range

Package: QFN (Quad Flat No-Lead)

Essence: The LM48100QMH/NOPB is a mono class D audio power amplifier designed for portable devices such as smartphones, tablets, and portable media players. It provides high-quality audio amplification with low power consumption.

Packaging/Quantity: The LM48100QMH/NOPB is available in a QFN package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.3W into 8Ω at 5V
• Efficiency: Up to 90%
• Quiescent Current: 1.6mA (typical)
• Shutdown Current: 0.01μA (typical)
• Signal-to-Noise Ratio (SNR): 95dB (typical)
• Total Harmonic Distortion (THD+N): 0.1% (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM48100QMH/NOPB has the following pin configuration:

```

---

| | | LM48100QMH/NOPB | |_______________________________________| | | | ___________ | | | | | | VDD | | GND | | |___________| | | | | ___________ | | SD | | IN+ | | | | | | |___________| | | | | ___________ | | SHDN | | IN- | | | | | | |___________| | | | | ___________ | | OUT | | BP | | | | | | |___________| | |_______________________________________| ```

Functional Features

• Mono audio amplification
• Class D amplifier architecture for high efficiency
• Low quiescent current for extended battery life
• Shutdown mode for power-saving when not in use
• Short-circuit and thermal protection
• Pop and click suppression during power-up and shutdown

Advantages and Disadvantages

Advantages: - High efficiency results in less power consumption - Small package size allows for compact device designs - Wide supply voltage range provides flexibility in power source selection - Low quiescent current extends battery life - Pop and click suppression enhances user experience

Disadvantages: - Limited output power compared to larger audio amplifiers - Requires external components for proper operation - May introduce some distortion at high output levels

Working Principles

The LM48100QMH/NOPB is a class D audio amplifier that uses pulse width modulation (PWM) to convert the input audio signal into a high-frequency square wave. This square wave is then filtered and amplified to produce the desired audio output. The class D architecture ensures high efficiency by minimizing power dissipation.

Detailed Application Field Plans

The LM48100QMH/NOPB is commonly used in portable electronic devices where space and power efficiency are crucial. Some potential application fields include:

1. Smartphones and tablets
2. Portable media players
3. Bluetooth speakers
4. Wearable devices
5. Gaming consoles

Detailed and Complete Alternative Models

• LM48100Q-Q1: Automotive-grade version with extended temperature range
• LM4860: Stereo audio amplifier with similar characteristics
• TPA3116D2: Class D audio amplifier with higher output power

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific requirements.

Word count: 511 words