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LM4809MMX from NSC,National Semiconductor

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LM4809MMX

Manufacturer: NSC

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode

Partnumber Manufacturer Quantity Availability
LM4809MMX NSC 3500 In Stock

Description and Introduction

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode The LM4809MMX is a dual audio power amplifier manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** National Semiconductor (NSC)  
- **Type:** Dual Audio Power Amplifier  
- **Package:** 8-Pin MSOP (MMX)  
- **Supply Voltage (V+):** 2.7V to 5.5V  
- **Output Power:** 105mW per channel into 16Ω at 5V  
- **Total Harmonic Distortion + Noise (THD+N):** 0.1% (typical)  
- **Shutdown Current:** 0.1µA (typical)  
- **Quiescent Current:** 3.5mA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The LM4809MMX is a dual bridge-connected audio power amplifier designed for portable electronic devices.  
- It operates from a single supply voltage and is optimized for low-power applications.  
- The device includes an internal thermal shutdown protection mechanism.  

### **Features:**  
- **Dual Bridge Amplifier:** Two independent amplifiers in one package.  
- **Low Quiescent Current:** 3.5mA (typical) for extended battery life.  
- **Low Shutdown Current:** 0.1µA (typical) for power savings.  
- **No Output Coupling Capacitors Required:** Eliminates the need for external components.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Space-Saving MSOP Package:** Suitable for compact designs.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode

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