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LM4864MM from NS,National Semiconductor

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LM4864MM

Manufacturer: NS

300 mW Audio Power Amplifier with Shutdown Mode

Partnumber Manufacturer Quantity Availability
LM4864MM NS 22690 In Stock

Description and Introduction

300 mW Audio Power Amplifier with Shutdown Mode The LM4864MM is a mono bridged audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:** 1.1W into 8Ω at 5V (THD+N = 10%)  
- **Supply Voltage Range:** 2.0V to 5.5V  
- **Shutdown Current:** 0.6µA (typical)  
- **Quiescent Current:** 2.2mA (typical)  
- **THD+N (Total Harmonic Distortion + Noise):** 0.2% (typical at 1kHz, 1W into 8Ω)  
- **PSRR (Power Supply Rejection Ratio):** 70dB (typical)  
- **Gain:** Internally fixed at 6dB  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin MSOP (Mini Small Outline Package)  

### **Descriptions:**  
The LM4864MM is designed for battery-powered applications such as mobile phones, portable media players, and other handheld devices. It features a low-power shutdown mode, eliminating the need for an external muting circuit. The device operates from a single supply and requires minimal external components.  

### **Features:**  
- **Bridged Output:** Eliminates the need for output coupling capacitors.  
- **Low Shutdown Current:** Extends battery life in portable applications.  
- **No Output Coupling Capacitors Required:** Reduces component count and cost.  
- **Thermal Shutdown Protection:** Prevents damage from excessive heat.  
- **Improved PSRR:** Reduces noise from power supply variations.  
- **Space-Saving MSOP Package:** Ideal for compact designs.  

This information is based on the manufacturer's datasheet for the LM4864MM.

Application Scenarios & Design Considerations

300 mW Audio Power Amplifier with Shutdown Mode

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