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LM4871N from NS,National Semiconductor

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LM4871N

Manufacturer: NS

3W Audio Power Amplifier with Shutdown Mode

Partnumber Manufacturer Quantity Availability
LM4871N NS 710 In Stock

Description and Introduction

3W Audio Power Amplifier with Shutdown Mode The LM4871N is a manufacturer by National Semiconductor (NS). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Type:** Audio Power Amplifier  
- **Output Power:** 3W (typical) into 3Ω at 5V  
- **Supply Voltage Range:** 2.0V to 5.5V  
- **Quiescent Current:** 2.5mA (typical)  
- **THD+N (Total Harmonic Distortion + Noise):** 0.2% (typical) at 1kHz, 1W into 3Ω  
- **Shutdown Current:** 0.01μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** PDIP-8 (Plastic Dual In-Line Package)  

### **Descriptions:**  
The LM4871N is a mono bridged audio power amplifier designed for applications requiring low voltage operation and high output power. It is optimized for driving speakers with minimal external components, making it suitable for portable devices like mobile phones, PDAs, and portable media players.  

### **Features:**  
- **Bridge-Tied Load (BTL) Configuration:** Eliminates the need for output coupling capacitors.  
- **Low Power Consumption:** Efficient for battery-powered applications.  
- **Shutdown Mode:** Reduces power consumption when not in use.  
- **Improved PSRR (Power Supply Rejection Ratio):** Minimizes noise from the power supply.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Short-Circuit Protection:** Safeguards the amplifier and speaker.  

This information is based on the manufacturer's datasheet for the LM4871N.

Application Scenarios & Design Considerations

3W Audio Power Amplifier with Shutdown Mode

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