LM48310SDX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-performance audio amplifier - Single-ended Class D operation - Low power consumption - Small package size - Wide supply voltage range

Package: SDX (8-pin LLP)

Essence: The LM48310SDX/NOPB is a high-performance audio amplifier IC designed for portable electronic devices such as smartphones, tablets, and portable media players. It provides efficient amplification of audio signals while consuming minimal power.

Packaging/Quantity: The LM48310SDX/NOPB is available in an 8-pin LLP (Leadless Leadframe Package) package. It is typically sold in reels containing multiple units.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.3W per channel into 8Ω load at 5V supply
• Efficiency: Up to 90%
• Total Harmonic Distortion + Noise (THD+N): <0.1%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM48310SDX/NOPB has the following pin configuration:

```

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| | --| VDD | --| GND | --| INL | --| INR | --| SHUTDOWN | --| OUTR | --| OUTL | |___________| ```

Functional Features

• Single-ended Class D operation for efficient power conversion
• Integrated shutdown mode for power-saving when not in use
• Short-circuit and thermal protection for reliable operation
• Pop and click suppression during power-up and power-down
• Internal gain settings for volume control

Advantages and Disadvantages

Advantages: - High efficiency resulting in longer battery life - Small package size allows for compact device designs - Low power consumption ideal for portable devices - Integrated protection features ensure reliable operation - Pop and click suppression enhances user experience

Disadvantages: - Limited output power compared to larger audio amplifiers - Requires external components for proper operation - Sensitive to noise interference due to high gain

Working Principles

The LM48310SDX/NOPB operates as a single-ended Class D audio amplifier. It converts the input audio signal into a high-frequency pulse-width modulated (PWM) signal. This PWM signal is then amplified by the internal power MOSFETs, which drive the connected speakers or headphones.

The Class D operation ensures high efficiency by minimizing power dissipation. The integrated shutdown mode allows the amplifier to enter a low-power state when not in use, further conserving energy.

Detailed Application Field Plans

The LM48310SDX/NOPB is commonly used in various portable electronic devices that require audio amplification. Some of the typical application fields include:

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

Alternative Models

Here are some alternative models that offer similar functionality:

1. TPA3116D2 - Texas Instruments
2. MAX98357A - Maxim Integrated
3. PAM8403 - Diodes Incorporated
4. TDA7492 - STMicroelectronics
5. TAS5720 - Texas Instruments

These alternative models can be considered based on specific requirements and design constraints.

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