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LM4946SQ from NS,National Semiconductor

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LM4946SQ

Manufacturer: NS

Output Capacitor-Less Audio Subsystem with Programmable National 3D

Partnumber Manufacturer Quantity Availability
LM4946SQ NS 7039 In Stock

Description and Introduction

Output Capacitor-Less Audio Subsystem with Programmable National 3D The LM4946SQ is a stereo audio power amplifier manufactured by National Semiconductor (NS).  

**Specifications:**  
- **Output Power:** 2.2W per channel into 4Ω at 5V  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 0.2% (typical)  
- **Shutdown Current:** 0.1μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 24-pin TSSOP  

**Descriptions:**  
- The LM4946SQ is designed for portable audio applications.  
- It features a low-power shutdown mode for power-saving operation.  
- Includes an internal depop circuit to reduce turn-on/off transients.  

**Features:**  
- Stereo Class AB amplifier  
- No output coupling capacitors required  
- Thermal and short-circuit protection  
- Pop-and-click suppression circuitry  
- Low external component count  

This information is based on the manufacturer's datasheet.

Partnumber Manufacturer Quantity Availability
LM4946SQ NSC 20 In Stock

Description and Introduction

Output Capacitor-Less Audio Subsystem with Programmable National 3D The LM4946SQ is a stereo audio power amplifier manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Type:** Stereo Audio Power Amplifier  
- **Output Power:** 2.1 W per channel (into 4Ω at 5V)  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 0.3% (typical)  
- **Shutdown Current:** 0.01 μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 24-Pin WQFN  

### **Descriptions:**  
The LM4946SQ is designed for portable audio applications, providing high-quality stereo amplification with low power consumption. It features a shutdown mode for power savings and operates efficiently within a wide voltage range, making it suitable for battery-powered devices.  

### **Features:**  
- **Stereo Class AB Amplifier**  
- **Low Quiescent Current** (4 mA typical)  
- **Thermal and Short-Circuit Protection**  
- **Pop-and-Click Suppression**  
- **No External Coupling Capacitors Required**  
- **Space-Saving WQFN Package**  

This information is based on the manufacturer's datasheet. For detailed electrical characteristics and application notes, refer to the official NSC documentation.

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