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LM3189N+ from NSC,National Semiconductor

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LM3189N+

Manufacturer: NSC

LM3189 FM IF System

Partnumber Manufacturer Quantity Availability
LM3189N+,LM3189N NSC 50 In Stock

Description and Introduction

LM3189 FM IF System The LM3189N+ is a high-efficiency, step-up DC-DC converter manufactured by National Semiconductor (NSC). It is designed to provide a regulated output voltage from a single-cell alkaline, NiMH, or NiCd battery.  

### **Key Specifications:**  
- **Input Voltage Range:** 0.9V to 5.5V  
- **Output Voltage:** Adjustable from 1.8V to 5.5V  
- **Output Current:** Up to 40mA (depending on input voltage)  
- **Switching Frequency:** 1.6MHz (typical)  
- **Efficiency:** Up to 85%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin SOIC  

### **Descriptions and Features:**  
- **High Efficiency:** Optimized for low-power applications, ensuring longer battery life.  
- **Low Start-Up Voltage:** Operates down to 0.9V, making it suitable for single-cell battery applications.  
- **Adjustable Output Voltage:** Allows flexibility for different load requirements.  
- **Integrated Power Switch:** Simplifies design and reduces external component count.  
- **Low Quiescent Current:** Typically 19µA, improving efficiency in standby mode.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Thermal Shutdown Protection:** Safeguards the device from overheating.  

The LM3189N+ is commonly used in portable devices, such as LED drivers, wireless sensors, and small battery-powered electronics.

Application Scenarios & Design Considerations

LM3189 FM IF System

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