LM4849MH/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Mono Class AB Audio Power Amplifier - Wide Supply Voltage Range: 2.7V to 5.5V - Low Quiescent Current: 4 mA (typical) - High Efficiency: 85% at 1 W into 8 Ω - Shutdown Mode for Power Saving - Thermal Shutdown Protection - Short-Circuit and Overtemperature Protection - Small Package Size: 16-Pin TSSOP

Package: 16-Pin TSSOP (Thin Shrink Small Outline Package)

Essence: The LM4849MH/NOPB is an integrated circuit that functions as a mono class AB audio power amplifier. It is designed to provide high-quality audio amplification in various applications.

Packaging/Quantity: The LM4849MH/NOPB is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: 1.1W (typical) into 8 Ω at 5V supply
• Total Harmonic Distortion + Noise (THD+N): 0.1% (typical) at 1 kHz, 1 W into 8 Ω
• Efficiency: 85% (typical) at 1 W into 8 Ω
• Shutdown Current: 0.01 μA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4849MH/NOPB has a 16-pin TSSOP package with the following pin configuration:

1. VDD: Positive Power Supply
2. SD: Shutdown Control Input
3. IN+: Positive Audio Input
4. IN-: Negative Audio Input
5. GND: Ground
6. OUT: Amplifier Output
7. VDD: Positive Power Supply
8. SD: Shutdown Control Input
9. IN+: Positive Audio Input
10. IN-: Negative Audio Input
11. GND: Ground
12. OUT: Amplifier Output
13. NC: No Connection
14. NC: No Connection
15. GND: Ground
16. VDD: Positive Power Supply

Functional Features

• Mono audio amplification with class AB operation.
• Wide supply voltage range allows for flexibility in various applications.
• Low quiescent current ensures power efficiency.
• Shutdown mode enables power-saving when the amplifier is not in use.
• Thermal shutdown protection prevents damage due to excessive heat.
• Short-circuit and overtemperature protection ensure safe operation.

Advantages and Disadvantages

Advantages: - High-quality audio amplification. - Wide supply voltage range for versatile applications. - Power-efficient design. - Protection features enhance reliability.

Disadvantages: - Mono output limits stereo sound reproduction. - Limited output power compared to higher wattage amplifiers.

Working Principles

The LM4849MH/NOPB operates as a mono class AB audio power amplifier. It amplifies the input audio signal and delivers it to the connected speaker or load. The amplifier operates within a wide supply voltage range, providing flexibility in different applications. It features low quiescent current, enabling efficient power consumption. The shutdown mode allows the amplifier to enter a low-power state when not in use. The thermal shutdown protection prevents overheating, while the short-circuit and overtemperature protection ensure safe operation.

Detailed Application Field Plans

The LM4849MH/NOPB can be used in various audio amplification applications, including: 1. Portable audio devices 2. Mobile phones 3. Tablets and laptops 4. Bluetooth speakers 5. Gaming consoles 6. Personal computers

Detailed and Complete Alternative Models

1. LM4860MH/NOPB: Mono Class AB Audio Power Amplifier with similar specifications and pin configuration.
2. LM4889MH/NOPB: Mono Class AB Audio Power Amplifier with higher output power and similar characteristics.
3. LM4950MH/NOPB: Stereo Class D Audio Power Amplifier with low quiescent current and compact package size.

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

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