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LM4838LQ from NS,National Semiconductor

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LM4838LQ

Manufacturer: NS

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain

Partnumber Manufacturer Quantity Availability
LM4838LQ NS 450 In Stock

Description and Introduction

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain The LM4838LQ is a stereo audio power amplifier manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** National Semiconductor (NS)  
- **Type:** Stereo Audio Power Amplifier  
- **Package:** LQ (44-Lead Plastic Quad Flat Package)  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Output Power:** Up to 1.1W per channel into 8Ω at 5V  
- **THD+N (Total Harmonic Distortion + Noise):** <1% (typical)  
- **Shutdown Current:** <1µA  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM4838LQ is a low-voltage, high-performance stereo audio amplifier designed for portable audio applications. It integrates two bridge-tied load (BTL) audio power amplifiers, making it suitable for driving small speakers efficiently. The device features low power consumption, making it ideal for battery-powered devices such as smartphones, portable media players, and handheld gaming systems.

### **Features:**  
- **Stereo BTL Amplifiers:** Eliminates the need for external output coupling capacitors.  
- **Low Voltage Operation:** Works efficiently from 2.7V to 5.5V.  
- **Low Quiescent Current:** Enhances battery life in portable applications.  
- **Thermal Shutdown Protection:** Prevents damage due to overheating.  
- **Pop-and-Click Suppression:** Reduces audible noise during power-up/down.  
- **External Gain Configuration:** Allows flexibility in setting amplifier gain.  
- **Shutdown Mode:** Reduces power consumption when not in use.  

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

Application Scenarios & Design Considerations

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain

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