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LM4668MH from NS,National Semiconductor

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LM4668MH

Manufacturer: NS

10W High-Efficiency Mono BTL Audio Power Amplifier

Partnumber Manufacturer Quantity Availability
LM4668MH NS 19 In Stock

Description and Introduction

10W High-Efficiency Mono BTL Audio Power Amplifier The LM4668MH is a mono 2.5W audio power amplifier manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features:  

### **Specifications:**  
- **Output Power:** 2.5W into 4Ω at 5V (THD+N = 10%)  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Quiescent Current:** 4mA (typical)  
- **Shutdown Current:** 0.6µA (typical)  
- **Total Harmonic Distortion + Noise (THD+N):** 0.2% (typical at 1W, 4Ω, 5V)  
- **Signal-to-Noise Ratio (SNR):** 100dB (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (LM4668MH)  

### **Descriptions:**  
- The LM4668MH is a Class AB audio amplifier designed for portable applications.  
- It features a low-power shutdown mode for power-saving operation.  
- The device includes thermal shutdown and short-circuit protection.  

### **Features:**  
- **Low Voltage Operation:** Works efficiently from 2.7V to 5.5V.  
- **Low Quiescent Current:** Only 4mA in active mode.  
- **Ultra-Low Shutdown Current:** 0.6µA when disabled.  
- **Thermal Shutdown Protection:** Prevents overheating.  
- **Short-Circuit Protection:** Safeguards the amplifier.  
- **Improved PSRR (Power Supply Rejection Ratio):** Reduces noise from the power supply.  
- **No External Compensation Required:** Simplifies design.  
- **Surface-Mount Package:** 8-pin SOIC for compact PCB layouts.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

10W High-Efficiency Mono BTL Audio Power Amplifier

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