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LM3490IM5-5.0 from NS,National Semiconductor

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LM3490IM5-5.0

Manufacturer: NS

100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF

Partnumber Manufacturer Quantity Availability
LM3490IM5-5.0,LM3490IM550 NS 1200 In Stock

Description and Introduction

100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF The LM3490IM5-5.0 is a step-down switching regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 5.0V (fixed)  
- **Input Voltage Range:** 4.5V to 35V  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5 (Thin)  

### **Descriptions:**  
The LM3490IM5-5.0 is a monolithic, high-efficiency, step-down DC-DC converter designed for easy implementation in a variety of applications. It integrates a high-side N-channel MOSFET and requires minimal external components for operation.  

### **Features:**  
- **Integrated Power MOSFET** (No external switch needed)  
- **Wide Input Voltage Range** (4.5V to 35V)  
- **Fixed Output Voltage** (5.0V)  
- **High Efficiency** (Up to 90%)  
- **Internal Soft-Start** (Reduces inrush current)  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  
- **Low Quiescent Current** (85µA typical)  

This regulator is suitable for industrial, automotive, and general-purpose power supply applications.

Application Scenarios & Design Considerations

100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF
Partnumber Manufacturer Quantity Availability
LM3490IM5-5.0,LM3490IM550 NSC 1000 In Stock

Description and Introduction

100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF The LM3490IM5-5.0 is a switching regulator from National Semiconductor (NSC). Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** Fixed 5.0V  
- **Input Voltage Range:** 4.5V to 35V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5  

### **Descriptions:**
The LM3490IM5-5.0 is a step-down (buck) DC-DC converter designed for high-efficiency power conversion. It integrates a high-side N-channel MOSFET and requires minimal external components. The fixed 5.0V output makes it suitable for applications requiring a stable voltage supply.  

### **Features:**
- **Integrated Power MOSFET:** Simplifies design and reduces external component count.  
- **Wide Input Voltage Range:** Supports 4.5V to 35V input.  
- **High Efficiency:** Up to 90% efficiency with internal synchronous rectification.  
- **Fixed Frequency Operation:** 500kHz switching frequency minimizes output ripple.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limit Protection:** Safeguards against excessive load conditions.  
- **Small Footprint:** SOT-23-5 package for space-constrained applications.  

This information is based solely on the manufacturer's datasheet for the LM3490IM5-5.0.

Application Scenarios & Design Considerations

100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF

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