LM4809MM/NOPB

Product Overview

Category: Audio Amplifier
Use: The LM4809MM/NOPB is a mono, bridge-tied load (BTL) audio power amplifier designed for use in portable electronic devices.
Characteristics: It features low quiescent current, low distortion, and a shutdown mode to conserve power.
Package: The LM4809MM/NOPB is available in a miniature 8-pin VSSOP package.
Essence: This amplifier is essential for driving small speakers with high efficiency and low power consumption.
Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Output Power: 105mW at 1% THD into 8Ω
• Quiescent Current: 1.6mA
• Shutdown Current: 0.6μA
• Supply Voltage Range: 2V to 5.5V
• Total Harmonic Distortion (THD): 0.2% at 85mW into 8Ω
• Shutdown Mode Supply Current: 0.15μA

Detailed Pin Configuration

1. IN-: Audio Input Negative
2. IN+: Audio Input Positive
3. GND: Ground
4. SD: Shutdown
5. VDD: Power Supply
6. OUT-: Speaker Output Negative
7. OUT+: Speaker Output Positive
8. BP: Bypass Capacitor Connection

Functional Features

The LM4809MM/NOPB offers: - Low quiescent current for extended battery life - Shutdown mode for power conservation - High efficiency for driving small speakers - Low distortion for high-quality audio output

Advantages and Disadvantages

Advantages: - Low power consumption - Small package size - High efficiency - Low distortion

Disadvantages: - Limited output power compared to larger amplifiers - Requires an external bypass capacitor for optimal performance

Working Principles

The LM4809MM/NOPB operates by amplifying the audio input signal and delivering it to the connected speaker with high efficiency and low distortion. Its low quiescent current and shutdown mode make it suitable for portable electronic devices where power consumption is critical.

Detailed Application Field Plans

The LM4809MM/NOPB is ideal for use in: - Portable audio players - Mobile phones - Portable gaming devices - Personal digital assistants (PDAs)

Detailed and Complete Alternative Models

• TPA2012D2 from Texas Instruments
• MAX98306 from Maxim Integrated
• NCP2820 from ON Semiconductor

In conclusion, the LM4809MM/NOPB is a compact and efficient audio amplifier suitable for portable electronic devices requiring high-quality audio output with minimal power consumption.

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