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LM4879IBPX from NATIONAL,National Semiconductor

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LM4879IBPX

Manufacturer: NATIONAL

1.1 Watt Audio Power Amplifier

Partnumber Manufacturer Quantity Availability
LM4879IBPX NATIONAL 3000 In Stock

Description and Introduction

1.1 Watt Audio Power Amplifier The LM4879IBPX is a mono bridged audio power amplifier manufactured by National Semiconductor (now part of Texas Instruments). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Output Power:** 3W (into 3Ω at 5V, THD+N = 10%)  
- **Supply Voltage Range:** 2.0V to 5.5V  
- **Quiescent Current:** 2.5mA (typical)  
- **Shutdown Current:** 0.01μA (typical)  
- **THD+N (Total Harmonic Distortion + Noise):** 0.3% (typical at 1W into 3Ω)  
- **PSRR (Power Supply Rejection Ratio):** 70dB (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 20-pin LLP (Leadless Leadframe Package)  

### **Descriptions:**  
- The LM4879IBPX is designed for portable audio applications such as mobile phones, PDAs, and portable media players.  
- It features a bridge-tied load (BTL) configuration, eliminating the need for external coupling capacitors.  
- Includes a low-power consumption shutdown mode for battery-powered applications.  

### **Features:**  
- **Bridged Output:** No output coupling capacitors required.  
- **Improved PSRR:** Reduces noise from power supply variations.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Short-Circuit Protection:** Protects the device from output short circuits.  
- **Low External Component Count:** Simplifies design and reduces PCB space.  
- **Surface-Mount Package (LLP):** Suitable for compact designs.  

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

Application Scenarios & Design Considerations

1.1 Watt Audio Power Amplifier

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