LM4809LDX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low voltage, stereo, 2.2W audio power amplifier
• Package: LLP (Leadless Package)
• Essence: The LM4809LDX/NOPB is a high-performance audio power amplifier designed for portable devices such as smartphones, tablets, and portable media players.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Operating Voltage: 2.5V to 5.5V
• Output Power: 2.2W per channel into 4Ω load at 5V supply
• Total Harmonic Distortion + Noise: 0.1% (typical) at 1kHz, 1.5W output power
• Shutdown Current: 0.01μA (typical)
• Shutdown Pin Threshold Voltage: 0.4V (typical)

Detailed Pin Configuration

The LM4809LDX/NOPB has a total of 20 pins. Here is the detailed pin configuration:

1. VDD: Positive power supply
2. SD: Shutdown control input
3. INL: Left channel input
4. INR: Right channel input
5. GND: Ground
6. BYP: Bypass capacitor connection
7. OUTL: Left channel output
8. OUTR: Right channel output
9. NC: No connection
10. NC: No connection
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection
17. NC: No connection
18. NC: No connection
19. NC: No connection
20. VDD: Positive power supply

Functional Features

• Low voltage operation allows for use in battery-powered devices.
• Stereo configuration provides separate amplification for left and right channels.
• High output power enables clear and loud audio playback.
• Shutdown control feature allows for power-saving when the amplifier is not in use.

Advantages and Disadvantages

Advantages: - Low voltage operation extends battery life in portable devices. - Small package size saves board space in compact designs. - High output power ensures quality audio performance. - Shutdown control feature reduces power consumption when not in use.

Disadvantages: - Limited output power compared to higher wattage amplifiers. - May require additional external components for optimal performance.

Working Principles

The LM4809LDX/NOPB operates as a class AB audio power amplifier. It takes the input audio signals from the left and right channels, amplifies them, and drives the corresponding speakers or headphones. The amplifier operates within a specified voltage range and delivers a clean and amplified audio signal to the output.

Detailed Application Field Plans

The LM4809LDX/NOPB is widely used in various portable electronic devices that require audio amplification. Some of its application fields include:

1. Smartphones
2. Tablets
3. Portable media players
4. Bluetooth speakers
5. Gaming consoles

Detailed and Complete Alternative Models

Here are some alternative models that can be considered as alternatives to the LM4809LDX/NOPB:

1. LM4863LQ/NOPB
2. TPA3116D2PWPR
3. MAX98357AETE+T
4. PAM8403DR
5. TDA7498E/N2

These alternative models offer similar functionality and can be suitable replacements depending on specific requirements.

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