LM4912MMX/NOPB

Product Overview

Category: Audio Amplifier
Use: Low voltage audio power amplifier
Characteristics: Small size, low power consumption
Package: 8-pin VSSOP
Essence: High-quality audio amplification in a compact package
Packaging/Quantity: Tape & Reel (2500 units per reel)

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Power: 1.1W at 5V, 10% THD+N, 8Ω Load
• Shutdown Current: 0.01μA (typical)
• Quiescent Current: 4mA (typical)

Detailed Pin Configuration

1. IN-: Inverting Input
2. IN+: Non-Inverting Input
3. GND: Ground
4. VDD: Power Supply
5. SHDN: Shutdown Control
6. OUT: Output
7. BYPASS: Bypass Capacitor
8. VREF: Reference Voltage

Functional Features

• Low Quiescent Current
• Thermal Shutdown Protection
• Short-Circuit and Thermal Protection
• Shutdown Control

Advantages and Disadvantages

Advantages: - Small package size - Low power consumption - Thermal and short-circuit protection

Disadvantages: - Limited output power compared to higher voltage amplifiers - Limited input voltage range

Working Principles

The LM4912MMX/NOPB is designed to amplify low-voltage audio signals with high efficiency. It operates on a supply voltage between 2.7V and 5.5V, making it suitable for portable and battery-powered applications. The amplifier features a shutdown control pin that allows the device to be put into a low-power state when not in use, minimizing power consumption.

Detailed Application Field Plans

The LM4912MMX/NOPB is ideal for use in portable electronic devices such as smartphones, tablets, portable speakers, and handheld gaming consoles. Its small size and low power consumption make it well-suited for applications where space and battery life are critical factors.

Detailed and Complete Alternative Models

• LM4863: Higher output power, larger package size
• LM4880: Lower quiescent current, similar package size
• LM4950: Integrated boost converter for higher output power

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