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LM49370RLX/NOPB from NATIONAL,National Semiconductor

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LM49370RLX/NOPB

Manufacturer: NATIONAL

Boomer Aud Pwr Amp & Sub-Sys w/ an Ultra Low EMI Sprd Spectrum Class D Loudspkr Amp 49-DSBGA -40 to 85

Partnumber Manufacturer Quantity Availability
LM49370RLX/NOPB,LM49370RLXNOPB NATIONAL 800 In Stock

Description and Introduction

Boomer Aud Pwr Amp & Sub-Sys w/ an Ultra Low EMI Sprd Spectrum Class D Loudspkr Amp 49-DSBGA -40 to 85 The **LM49370RLX/NOPB** is a **mono Class D audio amplifier** manufactured by **National Semiconductor** (now part of Texas Instruments).  

### **Key Specifications:**  
- **Output Power:** Up to **2.8W** into a **4Ω load** at **5V**.  
- **Supply Voltage Range:** **2.7V to 5.5V**.  
- **Efficiency:** Up to **90%** (Class D operation).  
- **THD+N (Total Harmonic Distortion + Noise):** **<1%** at **1W output**.  
- **Shutdown Current:** **<1µA** (low-power mode).  
- **Operating Temperature Range:** **-40°C to +85°C**.  
- **Package:** **16-pin LLP (4mm x 4mm)**.  

### **Features:**  
- **Filterless Class D Operation** (reduces external component count).  
- **Pop-and-Click Suppression** (minimizes noise during power-up/down).  
- **Low Quiescent Current** (~3mA typical).  
- **Short-Circuit and Thermal Protection**.  
- **I²C Control Interface** for volume and shutdown control.  
- **Single-Ended or Differential Input**.  

### **Applications:**  
- **Portable Audio Devices** (phones, tablets, Bluetooth speakers).  
- **Gaming Consoles**.  
- **Multimedia Systems**.  

This amplifier is designed for **space-constrained, battery-powered applications** requiring high efficiency and minimal external components.  

(Source: National Semiconductor/Texas Instruments datasheet.)

Application Scenarios & Design Considerations

Boomer Aud Pwr Amp & Sub-Sys w/ an Ultra Low EMI Sprd Spectrum Class D Loudspkr Amp 49-DSBGA -40 to 85

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