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LM4843MHX
Product Overview
Category: Audio Amplifier
Use: The LM4843MHX is a high-performance audio amplifier designed for use in portable devices such as smartphones, tablets, and portable media players.
Characteristics: It is known for its compact size, low power consumption, and high-quality audio output.
Package: The LM4843MHX comes in a small outline package (SOIC) with 8 pins.
Essence: This audio amplifier is essential for enhancing the audio experience in portable electronic devices.
Packaging/Quantity: The LM4843MHX is typically sold in reels of 2500 units.
Specifications
- Power Supply Range: 2.7V to 5.5V
- Output Power: 1.1W per channel into 8Ω at 5V
- Total Harmonic Distortion + Noise (THD+N): 0.15% (typical) at 1kHz, 1.0W into 8Ω
- Shutdown Current: 0.01μA (typical)
- Operating Temperature Range: -40°C to 85°C
Detailed Pin Configuration
The LM4843MHX has the following pin configuration: 1. IN- (Pin 1): Audio Input Negative 2. IN+ (Pin 2): Audio Input Positive 3. BP (Pin 3): Bypass Capacitor Connection 4. VDD (Pin 4): Power Supply Voltage 5. SHDN (Pin 5): Shutdown Control Input 6. OUTL (Pin 6): Left Channel Output 7. GND (Pin 7): Ground 8. OUTR (Pin 8): Right Channel Output
Functional Features
- High Efficiency: The LM4843MHX operates with high efficiency, making it suitable for battery-powered devices.
- Low Shutdown Current: In shutdown mode, the amplifier consumes minimal current, conserving battery life.
- Thermal Shutdown Protection: It includes thermal shutdown protection to prevent damage due to excessive heat.
Advantages and Disadvantages
Advantages: - Compact size - Low power consumption - High-quality audio output - Thermal shutdown protection
Disadvantages: - Limited output power compared to larger amplifiers - Requires external components for optimal performance
Working Principles
The LM4843MHX amplifies the audio signal received from the input and delivers it to the connected speakers while maintaining high efficiency and low power consumption. It utilizes a Class D amplifier architecture to achieve this.
Detailed Application Field Plans
The LM4843MHX is ideal for use in various portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Wearable devices
Detailed and Complete Alternative Models
Some alternative models to the LM4843MHX include: - TPA2012D2 from Texas Instruments - MAX98306 from Maxim Integrated - PAM8403 from Diodes Incorporated
In conclusion, the LM4843MHX is a versatile audio amplifier designed for portable electronic devices, offering high efficiency and high-quality audio output within a compact form factor.
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Énumérez 10 questions et réponses courantes liées à l'application de LM4843MHX dans les solutions techniques
Sure, here are 10 common questions and answers related to the application of LM4843MHX:
What is the LM4843MHX?
- The LM4843MHX is a stereo 2W audio amplifier with DC volume control.
What is the typical application of LM4843MHX?
- The LM4843MHX is commonly used in portable devices such as smartphones, tablets, and portable speakers.
What is the supply voltage range for LM4843MHX?
- The supply voltage range for LM4843MHX is typically between 2.7V and 5.5V.
What is the output power of LM4843MHX?
- The LM4843MHX can deliver up to 2W per channel into 4Ω loads.
Does LM4843MHX have built-in thermal shutdown protection?
- Yes, the LM4843MHX has built-in thermal shutdown protection to prevent overheating.
Can LM4843MHX operate in bridge-tied load (BTL) configuration?
- Yes, the LM4843MHX can be configured to operate in BTL mode for higher output power.
What is the typical quiescent current of LM4843MHX?
- The typical quiescent current of LM4843MHX is around 4mA.
Does LM4843MHX have short-circuit and overvoltage protection?
- Yes, the LM4843MHX features short-circuit and overvoltage protection to safeguard the device and connected components.
What is the recommended PCB layout for LM4843MHX?
- The recommended PCB layout includes proper grounding, bypass capacitors, and thermal management for optimal performance.
Is LM4843MHX suitable for battery-powered applications?
- Yes, the low supply voltage range and low quiescent current make LM4843MHX suitable for battery-powered applications.
I hope these questions and answers are helpful! Let me know if you need further assistance.