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LM4903MMX from NS,National Semiconductor

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LM4903MMX

Manufacturer: NS

1 Watt Audio Power Amplifier

Partnumber Manufacturer Quantity Availability
LM4903MMX NS 10500 In Stock

Description and Introduction

1 Watt Audio Power Amplifier The LM4903MMX is a mono bridged audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:** 1.1W into 8Ω at 5V  
- **Supply Voltage Range:** 2.2V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 1% (typical) at 1kHz, 1W into 8Ω  
- **Quiescent Current:** 3mA (typical)  
- **Shutdown Current:** 0.1μA (typical)  
- **Package:** 8-pin micro SMD (MM)  

### **Descriptions and Features:**  
- Designed for portable audio applications  
- Requires minimal external components  
- Integrated shutdown feature for power saving  
- Improved PSRR (Power Supply Rejection Ratio) reduces noise  
- Unity-gain stable  
- Thermal shutdown protection  
- Short-circuit protection  

This amplifier is optimized for driving speakers in small form-factor devices like mobile phones, PDAs, and portable media players.

Application Scenarios & Design Considerations

1 Watt Audio Power Amplifier

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