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LM4990ITLX/NOPB from NATIONAL,National Semiconductor

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LM4990ITLX/NOPB

Manufacturer: NATIONAL

2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level 9-DSBGA

Partnumber Manufacturer Quantity Availability
LM4990ITLX/NOPB,LM4990ITLXNOPB NATIONAL 3000 In Stock

Description and Introduction

2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level 9-DSBGA The LM4990ITLX/NOPB is a mono 2.1W audio power amplifier manufactured by National Semiconductor (now part of Texas Instruments).  

### **Key Specifications:**  
- **Output Power:** 2.1W into 4Ω at 5V supply  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 1% (typical) at 1W into 4Ω  
- **Shutdown Current:** <1μA (typical)  
- **Quiescent Current:** 3.5mA (typical)  
- **PSRR (Power Supply Rejection Ratio):** 70dB (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin LLP (Leadless Leadframe Package)  

### **Features:**  
- **Efficiency:** High efficiency Class AB operation  
- **Shutdown Mode:** Low-power shutdown mode for power savings  
- **Pop & Click Suppression:** Minimizes audible noise during power-up/down  
- **Short-Circuit Protection:** Built-in protection against output shorts  
- **Thermal Shutdown:** Prevents damage from overheating  

### **Applications:**  
- Portable audio devices  
- Mobile phones  
- Notebook computers  
- Personal media players  

This amplifier is designed for space-constrained applications requiring high-quality audio output with low power consumption.  

(Source: National Semiconductor/Texas Instruments Datasheet)

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