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LM4902MMX from NS,National Semiconductor

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LM4902MMX

Manufacturer: NS

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode

Partnumber Manufacturer Quantity Availability
LM4902MMX NS 3502 In Stock

Description and Introduction

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode The LM4902MMX is a manufacturer by National Semiconductor (NS).  

**Specifications:**  
- **Type:** Audio Power Amplifier  
- **Output Type:** 1-Channel (Mono)  
- **Output Power:** 1.1W (into 8Ω at 5V)  
- **Supply Voltage Range:** 2.2V to 5.5V  
- **THD + N:** 1% (typical)  
- **Shutdown Current:** 0.01μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin MSOP  

**Descriptions:**  
The LM4902MMX is a mono, bridged audio power amplifier designed for portable applications. It operates from a single supply and delivers high-quality output power with low distortion.  

**Features:**  
- No output coupling capacitors required  
- Improved PSRR at 217Hz  
- Unity-gain stable  
- Thermal shutdown protection  
- Space-saving MSOP package  

(Source: National Semiconductor datasheet)

Application Scenarios & Design Considerations

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
Partnumber Manufacturer Quantity Availability
LM4902MMX NATIONAL 3790 In Stock

Description and Introduction

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode The LM4902MMX is a power amplifier manufactured by National Semiconductor (now part of Texas Instruments). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** National Semiconductor  
- **Type:** Audio Power Amplifier  
- **Package:** 8-Pin VSSOP (MMX)  
- **Output Power:** 1.1W per channel into 8Ω (at 5V supply)  
- **Supply Voltage Range:** 2.2V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 1% (typical)  
- **Shutdown Current:** 0.01μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Gain:** Fixed internally at 6dB  

### **Descriptions:**
- The LM4902MMX is a dual, bridge-tied load (BTL) audio power amplifier designed for portable applications.  
- It operates from a single supply and requires minimal external components.  
- The device features an internal thermal shutdown protection mechanism.  

### **Features:**
- **Low Quiescent Current:** 2.6mA (typical)  
- **Improved PSRR (Power Supply Rejection Ratio):** Reduces noise from the power supply.  
- **No Output Coupling Capacitors Required:** Saves board space and cost.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Space-Saving Package:** 8-pin VSSOP (MMX) for compact designs.  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode

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