LM4935RLX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low Power, Stereo, Class D
• Package: QFN (Quad Flat No-Lead)
• Essence: This IC is designed to amplify audio signals with low power consumption while providing stereo output. It belongs to the LM4935 series of audio amplifiers.
• Packaging/Quantity: The LM4935RLX/NOPB is available in a QFN package and is typically sold in reels of 2500 units.

Specifications

• Power Supply Voltage: 2.7V - 5.5V
• Output Power: Up to 1.6W per channel into 4Ω load at 5V supply voltage
• Total Harmonic Distortion + Noise: 0.03% (typical) at 1kHz, 1.2W into 4Ω load
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4935RLX/NOPB has a total of 24 pins arranged as follows:

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| | | 1 2 3 4 5 6 7 8 9 | |_______________________________________| | | | 10 11 12 13 14 15 16 17 18 | |_______________________________________| | | | 19 20 21 22 23 24 | |_______________________________________| ```

Functional Features

• Low power consumption
• Stereo audio amplification
• Class D amplifier architecture for efficient power conversion
• Integrated shutdown mode for power saving
• Thermal and short-circuit protection

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered devices - Stereo output provides a more immersive audio experience - Class D amplifier architecture ensures high efficiency - Integrated shutdown mode helps conserve power when not in use - Thermal and short-circuit protection enhance reliability

Disadvantages: - Limited output power compared to higher wattage amplifiers - May require additional components for certain applications

Working Principles

The LM4935RLX/NOPB utilizes a Class D amplifier architecture, which converts the input audio signal into a high-frequency pulse-width modulated (PWM) signal. This PWM signal is then amplified using switching transistors to drive the speakers. The Class D design allows for efficient power conversion, minimizing power loss and maximizing battery life.

Application Field Plans

The LM4935RLX/NOPB is commonly used in various portable audio devices such as smartphones, tablets, portable media players, and Bluetooth speakers. Its low power consumption and stereo output make it ideal for these applications where space and battery life are critical factors.

Alternative Models

• LM4935RLX/NOPB: QFN package, 24 pins
• LM4935RLX: QFN package, 24 pins
• LM4935RL/NOPB: QFN package, 24 pins
• LM4935RL: QFN package, 24 pins

These alternative models offer similar functionality and pin configuration, providing flexibility in choosing the most suitable option for specific design requirements.

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