LM4835MTE

Product Overview

Category: Integrated Circuit (IC)

Use: LM4835MTE is a stereo audio amplifier designed for portable devices such as smartphones, tablets, and portable media players. It provides high-quality audio amplification for small speakers or headphones.

Characteristics: - Small form factor - Low power consumption - High efficiency - Wide supply voltage range - Thermal shutdown protection

Package: LM4835MTE comes in a compact surface-mount package, typically a 20-pin TSSOP (Thin Shrink Small Outline Package).

Essence: The essence of LM4835MTE lies in its ability to deliver high-quality audio amplification in a small and efficient package, making it ideal for portable electronic devices.

Packaging/Quantity: LM4835MTE is typically sold in reels or tubes containing multiple units, with quantities varying depending on the supplier.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.3W per channel into 8Ω load at 5V supply
• Total Harmonic Distortion + Noise (THD+N): <0.1% at 1kHz, 1.2W output power
• Efficiency: Up to 90%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LM4835MTE has a total of 20 pins, each serving a specific function. Here is a detailed pin configuration:

1. VDD: Positive power supply
2. GND: Ground reference
3. SD: Shutdown control input
4. INL: Left channel audio input
5. INR: Right channel audio input
6. BYP: Bypass capacitor connection
7. VDD: Positive power supply
8. GND: Ground reference
9. OUTL: Left channel audio output
10. OUTR: Right channel audio output
11. BST: Boost capacitor connection
12. VDD: Positive power supply
13. GND: Ground reference
14. INL: Left channel audio input
15. INR: Right channel audio input
16. BYP: Bypass capacitor connection
17. VDD: Positive power supply
18. GND: Ground reference
19. OUTL: Left channel audio output
20. OUTR: Right channel audio output

Functional Features

• Stereo audio amplification
• Low power consumption
• Thermal shutdown protection
• Short-circuit and overcurrent protection
• Pop and click suppression during power-on/off transitions
• External gain control capability
• Internal gain control for volume adjustment

Advantages and Disadvantages

Advantages: - Compact size suitable for portable devices - High efficiency for extended battery life - Provides high-quality audio amplification - Offers thermal shutdown protection for safety - Pop and click suppression enhances user experience

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

Working Principles

LM4835MTE operates as a class D amplifier, utilizing pulse-width modulation (PWM) techniques to convert the audio signal into a high-frequency square wave. This square wave is then filtered and amplified to produce the desired audio output.

The amplifier's internal circuitry ensures efficient power conversion and minimizes distortion. It also incorporates various protection mechanisms to safeguard against short circuits, overcurrent, and thermal issues.

Detailed Application Field Plans

LM4835MTE finds applications in various portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Gaming consoles - Wearable devices

Its compact size, low power consumption, and high-quality audio amplification make it suitable for these applications.

Detailed and Complete Alternative Models

Some alternative models to LM4835MTE that offer similar functionality include: - TPA3116D2: A class D audio amplifier with higher output power and advanced features. - MAX98357A: An ultra-low-power stereo audio amplifier designed for battery-powered applications. - PAM8403: A compact class D amplifier module with built-in volume control.

These alternatives provide options with varying specifications and features, allowing designers to choose the most suitable amplifier for their specific requirements.

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