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LM3203 from NS,National Semiconductor

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LM3203

Manufacturer: NS

Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers

Partnumber Manufacturer Quantity Availability
LM3203 NS 400 In Stock

Description and Introduction

Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers The LM3203 is a step-down DC-DC converter manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4V to 30V  
- **Output Voltage Range:** Adjustable from 1.225V to 28V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 300kHz (fixed)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-263 (D2PAK), TO-220 (5-lead)  

### **Descriptions:**  
- The LM3203 is a monolithic buck regulator designed for high-efficiency step-down voltage conversion.  
- It integrates a power MOSFET switch for simplified design and improved thermal performance.  
- Suitable for industrial, automotive, and telecom applications.  

### **Features:**  
- **Integrated Power MOSFET:** Reduces external component count.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation at low input voltages.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Current Limiting:** Prevents damage from excessive load currents.  
- **Soft-Start Function:** Reduces inrush current during startup.  

This information is strictly factual from the LM3203 datasheet by National Semiconductor.

Application Scenarios & Design Considerations

Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers

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