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LM4865 from NS,National Semiconductor

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LM4865

Manufacturer: NS

750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch

Partnumber Manufacturer Quantity Availability
LM4865 NS 100 In Stock

Description and Introduction

750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch The LM4865 is a mono bridge-connected audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:** 1.1W into an 8Ω load with 5V supply  
- **Supply Voltage Range:** 2.0V to 5.5V  
- **Quiescent Current:** 4mA (typical)  
- **THD+N (Total Harmonic Distortion + Noise):** 1% (typical at 1kHz, 1W into 8Ω)  
- **Shutdown Current:** 0.6μA (typical)  
- **Gain:** Internally fixed at 6dB  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM4865 is designed for battery-powered applications such as mobile phones, portable media players, and other compact audio devices. It features a bridge-tied load (BTL) configuration, eliminating the need for an output coupling capacitor. The device includes a low-power shutdown mode to conserve battery life.  

### **Features:**  
- **Bridge-Tied Load (BTL) Configuration** – No output coupling capacitor required  
- **Low Quiescent Current** – Extends battery life  
- **Shutdown Mode** – Reduces power consumption when not in use  
- **Internal Thermal Shutdown Protection** – Prevents damage from overheating  
- **Space-Saving Package** – Available in an 8-pin MSOP package  

The LM4865 is optimized for low-voltage operation and minimal external components, making it suitable for portable audio applications.

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