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LM4851LQ from NS,National Semiconductor

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LM4851LQ

Manufacturer: NS

Integrated Audio Amplifier System

Partnumber Manufacturer Quantity Availability
LM4851LQ NS 2000 In Stock

Description and Introduction

Integrated Audio Amplifier System The LM4851LQ is a mono Class D audio power amplifier manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Output Power:** Up to 1.1W into 8Ω at 5V supply  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Efficiency:** Up to 90% (Class D operation)  
- **THD+N (Total Harmonic Distortion + Noise):** <1% at 1W into 8Ω  
- **Shutdown Current:** <1µA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin LLP (Leadless Leadframe Package)  

### **Descriptions:**  
- The LM4851LQ is a mono, filterless Class D audio amplifier designed for portable applications.  
- It operates in a bridge-tied load (BTL) configuration, eliminating the need for an output coupling capacitor.  
- The device includes an integrated depop circuitry to minimize audible noise during power-up and shutdown.  

### **Features:**  
- **Filterless Operation:** Eliminates the need for external LC filters.  
- **Low Quiescent Current:** Typically 2.5mA for power efficiency.  
- **Shutdown Mode:** Reduces power consumption when not in use.  
- **Thermal Protection:** Prevents damage from excessive heat.  
- **Pop-and-Click Suppression:** Minimizes unwanted noise during power transitions.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Integrated Audio Amplifier System
Partnumber Manufacturer Quantity Availability
LM4851LQ NSC 1000 In Stock

Description and Introduction

Integrated Audio Amplifier System The LM4851LQ is a manufacturer by National Semiconductor (NSC).  

**Specifications:**  
- **Type:** Audio Power Amplifier  
- **Output Power:** 1.1W (typical) into 8Ω at 5V  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Shutdown Current:** 0.01μA (typical)  
- **Quiescent Current:** 2.2mA (typical)  
- **Total Harmonic Distortion (THD):** 0.2% (typical) at 1kHz, 1W into 8Ω  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-Pin LLP (Leadless Leadframe Package)  

**Descriptions:**  
The LM4851LQ is a mono, bridge-tied load (BTL) audio power amplifier designed for portable applications. It features low power consumption and high efficiency, making it suitable for battery-powered devices.  

**Features:**  
- Low shutdown current  
- No output coupling capacitors required  
- Improved click-and-pop suppression  
- Thermal shutdown protection  
- Short-circuit protection  
- Space-saving LLP package  

(Source: National Semiconductor Datasheet)

Application Scenarios & Design Considerations

Integrated Audio Amplifier System

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