LM4845ITLX/NOPB
Product Overview
Category: Integrated Circuit (IC)
Use: Audio Amplifier
Characteristics: - Mono Class AB Audio Power Amplifier - Low Quiescent Current - Wide Supply Voltage Range - Thermal Shutdown Protection - Short-Circuit and Thermal Protection - Small Package Size
Package: 14-Pin Thin Shrink Small Outline Package (TSSOP)
Essence: The LM4845ITLX/NOPB is a mono audio power amplifier IC designed for low-power applications. It provides high-quality audio amplification with low quiescent current consumption.
Packaging/Quantity: The LM4845ITLX/NOPB is available in tape and reel packaging, with 2500 units per reel.
Specifications
- Supply Voltage Range: 2.7V to 5.5V
- Output Power: 1.2W into 8Ω at 5V
- Total Harmonic Distortion + Noise (THD+N): 0.1% (typical)
- Efficiency: 85% (typical)
- Shutdown Current: 0.01μA (typical)
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The LM4845ITLX/NOPB has the following pin configuration:
Pin 1: Shutdown
Pin 2: Bypass Capacitor
Pin 3: Input
Pin 4: GND
Pin 5: Output
Pin 6: VDD
Pin 7: Gain Select
Pin 8: Mute
Pin 9: Thermal Pad
Pin 10: Bypass Capacitor
Pin 11: Bypass Capacitor
Pin 12: Bypass Capacitor
Pin 13: Bypass Capacitor
Pin 14: Bypass Capacitor
Functional Features
- Low quiescent current consumption for power-sensitive applications.
- Wide supply voltage range allows operation with various power sources.
- Thermal shutdown protection prevents damage due to excessive temperature.
- Short-circuit and thermal protection ensure the safety of the amplifier and connected speakers.
- Small package size enables compact designs.
Advantages and Disadvantages
Advantages: - Low power consumption - High-quality audio amplification - Wide supply voltage range - Built-in protection features
Disadvantages: - Mono output only - Limited output power
Working Principles
The LM4845ITLX/NOPB is a Class AB audio power amplifier. It amplifies the input audio signal and delivers it to the connected speaker. The amplifier operates in a low quiescent current mode, minimizing power consumption when no audio signal is present. It also incorporates thermal shutdown and short-circuit protection to prevent damage to the IC and connected components.
Detailed Application Field Plans
The LM4845ITLX/NOPB is suitable for a wide range of low-power audio applications, including: - Portable audio devices - Mobile phones - Tablets - MP3 players - Personal computers - Gaming consoles
Detailed and Complete Alternative Models
Some alternative models to the LM4845ITLX/NOPB include: - LM4861: Stereo Class AB Audio Power Amplifier - LM386: Low Voltage Audio Power Amplifier - TPA3110D2: Stereo Class D Audio Power Amplifier - MAX9744: Mono Class D Audio Power Amplifier
These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific application requirements.
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Question: What is the maximum power output of LM4845ITLX/NOPB?
Answer: The LM4845ITLX/NOPB has a maximum power output of 1.1W per channel into an 8Ω load.Question: Can LM4845ITLX/NOPB operate with a single supply voltage?
Answer: Yes, LM4845ITLX/NOPB can operate with a single supply voltage ranging from 2.7V to 5.5V.Question: What is the typical quiescent current of LM4845ITLX/NOPB?
Answer: The typical quiescent current of LM4845ITLX/NOPB is 4mA.Question: Does LM4845ITLX/NOPB have built-in short-circuit and thermal protection?
Answer: Yes, LM4845ITLX/NOPB features built-in short-circuit and thermal protection.Question: What is the recommended application circuit for LM4845ITLX/NOPB?
Answer: The recommended application circuit includes input coupling capacitors, volume control, and output coupling capacitors.Question: Can LM4845ITLX/NOPB be used in portable audio devices?
Answer: Yes, LM4845ITLX/NOPB is suitable for use in portable audio devices due to its low supply voltage requirement.Question: What is the typical total harmonic distortion (THD) of LM4845ITLX/NOPB?
Answer: The typical THD of LM4845ITLX/NOPB is 0.1% at 1kHz and 10% of the rated output power.Question: Is LM4845ITLX/NOPB suitable for driving headphones?
Answer: Yes, LM4845ITLX/NOPB can drive headphones with an impedance range of 16Ω to 32Ω.Question: Can LM4845ITLX/NOPB be used in battery-powered applications?
Answer: Yes, LM4845ITLX/NOPB is well-suited for battery-powered applications due to its low power consumption.Question: What is the typical shutdown current of LM4845ITLX/NOPB?
Answer: The typical shutdown current of LM4845ITLX/NOPB is 0.15μA.