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LM4851ITLX from National,National Semiconductor

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LM4851ITLX

Manufacturer: National

Integrated Audio Amplifier System

Partnumber Manufacturer Quantity Availability
LM4851ITLX National 9000 In Stock

Description and Introduction

Integrated Audio Amplifier System The LM4851ITLX is a mono Class D audio amplifier manufactured by National Semiconductor (now part of Texas Instruments). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Power:** Up to 2.8W into 4Ω at 5V supply  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Efficiency:** Up to 90% (Class D operation)  
- **THD+N (Total Harmonic Distortion + Noise):** 0.3% (typical) at 1W into 4Ω  
- **Shutdown Current:** <1μA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin LLP (Leadless Leadframe Package)  

### **Descriptions:**  
- The LM4851ITLX is a mono, filterless Class D audio amplifier designed for portable applications.  
- It features a low-power shutdown mode and requires minimal external components.  
- The device includes thermal shutdown and click-and-pop suppression circuitry.  

### **Features:**  
- **Filterless Operation:** Eliminates the need for output filters.  
- **Low Quiescent Current:** 3.5mA (typical)  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Click-and-Pop Suppression:** Reduces audible noise during power-up/down.  
- **Small Footprint:** 10-pin LLP package (3mm x 3mm) for space-constrained designs.  

This information is sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

Integrated Audio Amplifier System

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