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LM4990ITL from NS,National Semiconductor

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LM4990ITL

Manufacturer: NS

2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level

Partnumber Manufacturer Quantity Availability
LM4990ITL NS 200 In Stock

Description and Introduction

2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level The LM4990ITL is a mono bridged audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:** 2.8W into 4Ω at 5V  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 1% (typical)  
- **Shutdown Current:** <1µA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin WSON  

### **Descriptions:**  
The LM4990ITL is designed for portable audio applications, providing high-quality output with minimal external components. It features a shutdown mode for power-saving operation and operates efficiently from a single supply voltage.  

### **Features:**  
- **Bridged Output:** Eliminates the need for output coupling capacitors  
- **Low Quiescent Current:** 3.5mA (typical)  
- **Thermal Shutdown Protection:** Prevents overheating  
- **Improved PSRR (Power Supply Rejection Ratio):** Reduces noise from the power supply  
- **Short-Circuit Protection:** Enhances reliability  

This amplifier is commonly used in mobile phones, portable media players, and other battery-powered audio devices.

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